Fuel Return Line Blocked

From the fuel pump the line goes up the front of the engine, to the right of the water pump (behind the belt), to the carburator(s). See related links to what you are looking for. This requires insertion of the bypass plug into the fuel pump. Many of the major manufacturers recommend replacing the high pressure fuel lines between the rail and the injectors at certain intervals. This kit will allow you to delete the belt driven vacuum pump mounted on the lower left side of the block on the direct injected Gen 5 GM engines. You can and will deadhead the fuel pump and shoot pressure to the max, so don't run the car with this in place. can i do this? or to much pressure?. 6L and have noticed fuel lines on driver side are kinked. Modification Fuel system modification is carried out because the car is running lean at high loads – it needs more fuel than the standard fuel system can provide. Fuel Block. You don't say the specific engine in your car but assuming it's one of the 1. To determine if air is the problem, install a clear return hose on the return side of the injection pump. Reach into the carburetor with the needle nosed pliers and unhook both the gas tank line and the return line from the carburetor's nozzles. The main point of it is to keep the fuel moving so that it can't pick up as much heat and cause vapor lock. Pressure Line: A pressurized fuel line that carries fuel from the fuel tank to the fuel injectors. Cummins 4BT/6BT Fuel Lines. 5-02 Dodge Cummins Steel Fuel Return Line from VP44 to T Fitting 3945707 Save 1% 98. Your description is that the fuel pressure is up and then down. Damaged fuel lines restrict fuel flow and prevent the engine from starting. If you get a fuel pump failure with no fuel return it is because the diaphragm was worn out or old. Not all vehicles were equipped with a return line. This is a complete system that will support over 2400 Horse Power. Fuel Block. Can anyone tell me the procedure for blocking off the return line and checking the pressure? Is it something easy to do? 2001 Silverado 5. There is a main fuel line from the fuel tank to the fuel rail. Coolant pipe to cylinder block. Otherwise, the fuel pressure regulator may be faulty. Fuel Pump Support Bracket Fuel Pump Timing Fuel Lift Pump Stall Speed Test. Many times this is due to kinked fuel lines, improper routing of the return line and/or fuel line restrictions. You can pinch or block the return line temporarily to see if pressure goes up. The Jeep conversion industry has seen various evolutions of fuel system modifications to accommodate modern fuel injection engines, including the installation of external fuel pumps and the installation of various variable pressure regulator systems. 10491 bundle MA Heavy Duty Injector Return Line Bolts at the Injector, LB7, 2001-2004, Duramax The MA Heavy Duty LB7 Injector Return Line Bolt has been redesigned to allow nearly double the tool engagement of GM 97228929. therefore only suction occurred on the pass side and return fuel went to drivers side. 5-2018 - Fuel System! XDP carries all the parts and accessories you need for the best diesel performance. Plumb your hot rod, truck or race car safely with the right parts for the job!. If the fuel return hose becomes blocked or kinked it may cause the carburetor to flood from excessive fuel or pressure buildup. Fuel pump sold separately. Also, you may see an incoming fuel line and a return fuel line connected to it, depending on your particular configuration. Also, if at all possible, you want to mini-mize the use of 90° fittings. I talked wi VC and they want me to install a "T" between the pump and carb. Order your Chevy K1500 K2500 Rear Return Fuel Line Dorman 800-852 - 1AFFL00113 today at 1AAuto. This kit will allow you to delete the belt driven vacuum pump mounted on the lower left side of the block on the direct injected Gen 5 GM engines. Fuel Delivery and Return Kit (Pump, Regulator, Filter, Fittings & Hose) 2-Port Fuel Pressure Regulator (EFI) Black & Aluminum - 9/16-18: EFI regulator with one feed line to the fuel rails and one return line to the tank. Fuel Regulator Failures. Turn regulator on top of Fuel Injector Cleaner to full OPEN position (counterclockwise). UBER PARTNER REPORTING GUIDE Am I required to file a tax return? In most cases, you will be required to file a Form 1040 and attach Schedule C and Schedule SE to report your earnings from being an Uber partner. Smoke in the car is a dangerous sign of a clogged fuel line. Torque specifications for Cummins B series 1991-1994 engines. I installed edel 1406 (with 6AN fitting/hose) on sbc 350, with one inlet/one outlet mechanical fuel pump. Fuel Line Sizing — What Size Do I Need? By admin on November 16, 2012 in General , Technical Articles Lots of strange information out on the internet regarding fuel line sizing and it seems like most of the time people run way more diameter fuel line than they need. Test fuel pressure with a fuel pressure gauge. I have never worried about clocking the return line. Sending Unit, Fuel, 1971-72 A-Body, 3/8" Line w/o Return This is the exact reproduction and guaranteed to perform flawlessly. Damaged fuel lines restrict fuel flow and prevent the engine from starting. If it below 40 psi, check for a faulty in tank pump coupling hose, pulsator, wrong inlet filter, or even wrong fuel pump. This is a complete system that will support over 2400 Horse Power. Failure to have the hose protection can cause damage to the hose. The fuel can not pass back into return duct, and is now compressed by the plunger until pressure exceeds specific "opening" pressure, and the injector nozzle needle lifts, allowing fuel to be injected into the combustion chamber. Ensure the engine is off. You'll need to keep an even closer eye on them if you run biodiesel. The fuel return line is blocked if the fuel pressure now meets specifications. 0L and early 4. Set your fuel system up right with the correct fuel system components and accessories from JEGS!. This will require the use of a 5/8” fuel tank pickup or an aftermarket fuel tank sump with a 5/8” outlet. Key switch. Small, blocks off the return line so you can test the regulator, injectors, and fuel pump check valve for leaks. The Jeep conversion industry has seen various evolutions of fuel system modifications to accommodate modern fuel injection engines, including the installation of external fuel pumps and the installation of various variable pressure regulator systems. This plate bolts up to the side of your frame to protect the fuel/brake line rubber hose connection from the exhaust heat. Google LB7 pressure relief valve and you should be able to come up with a picture of it and its location. I found that the fuel line was empty. This causes the plastic connectors to snap or fuel lines to bend and restrict the flow. Crank the engine for 15 seconds and verify no fuel leaks from the injector. There is no return line and the pump needs a lot of pressure and flow to operate properly, 72. This requires insertion of the bypass plug into the fuel pump. Order 90-125: Short 1"x20 Threads Seals Bottom of Threads - Uses 3/8 fuel line fitting. Motorcycle Troubleshooting Guide – Four-Stroke Motorcycle Troubleshooting Guide While this Motorcycle Troubleshooting Guide is not a complete guide of every possible cause for each problem listed, it will help assist mechanics in troubleshooting some of the most common difficulties they will face. If you are swapping into a car that originally had a carburetor and a mechanical fuel pump there is a good chance you will have to remove a component in the gas tank if you plan on using the original tank. The lower line supplies pressurized fuel to the regulator and injectors, while the upper line returns low-pressure fuel to the tank. To learn more about the universal fuel pump or to find fass fuel system dealers, contact us today!. Ensure the engine is off. Check the fuel pressure with a fuel pressure gauge could be the return line is clogged-up and overpressurizing it, it suppose to return fuel back to the tank or the injectors are leaking and a computer problem. I'd like to block the front fuel pump return line on my 1995 F150. I think I may have cleared up the confusion regarding the air bleed valve. Understandably, this is not a common problem, but it can occur by failing to properly remove the fuel line connectors from the fuel filter. I dont think it will allow fuel to return to the tank, as it is used to vent the fuel tank into the charcoal cannister. A total blockage will stop the car, but a partial one may only cause fuel starvation at high speed, which is hard to diagnose as there may be other causes. Blocking or restricting the line only increases fuel pressure at the injectors. It will also have a fuel vapor separator and a charcoal canister. The only easily accessible sections of the return line seem to be in the area of the next to the fuel filter and/or as the lines turns up towards the tank. Big Block Chevy V8. Hello I have a 94 corvette with lt1 automatic, it starts normal and smooth, runs for 2-3 seconds and dies clean, its losing injector pulse only, will run as long as you spray intake, sys light flashes. Can anyone tell me the procedure for blocking off the return line and checking the pressure? Is it something easy to do? 2001 Silverado 5. Fuel Pressure Regulator – Alsolocated in the fuel tank, the regulator controls fuel pressure between 55 and 62 PSI by returning excess fuel from the fuel pump back to the fuel tank. Classic Tube Fuel Return Line for 1994 Jeep Wrangler YJ with 20 Gallon Fuel Tank. It is important to keep up with these as well with your maintenance as they can cause a lot of issues if they are not properly taken care of or looked after. We are the worlds first online supplier of Earls AN fittings, adapters, Swivel Seal, Ano-Tuff, stainless steel braided lines, PTFE lined braided, AN wrenches, AN port adapters, fuel filters, Aeroquip Air Conditioning Hoses, check valves, oil filters, oil block adapters, Earls oil coolers, Setrab oil coolers, gauge adapters, Turbo line kits. Okay, here's the story. Upon first use, check for leaks! WARNING • If fuel is leaking: Stop engine, and re-secure hose and clamp. Clogged fuel filter. Bleed the air from the fuel return pipe. Tap halfway back to center to relocate the line and re tighten the screws. It generally starts with a partial blockage, where playing around with the fuel hose and pumping the primer bulb will get the motor to start or keep it running. The Fuel Systems new product line supports engine applications ranging from 6 to 78 liters. Remove timing pin and rotation tool from engine, and plug openings. Avoid sharp turns or bends in the fuel line rout-. The Delphi F2P and F2E modular common rail systems use this approach [2990][2992]. In order for the fuel injection system to fulfill its purpose, fuel must be transferred to it from the fuel tank. com is your online source heavy duty engine parts for your truck & tractor. Fuel mileage directly impacts the budget of every large diesel fuel user and the financial bottom line of the small one. The entire system needs to be setup in a way that helps to purge air. The Mk 3 and a few other fords have no lift pump. Fuel Injection Pipe Nut 30 lb ft 41 N•m Fuel Injector Bracket Bolt 22 lb ft 30 N•m Fuel Inlet Pipe Bracket Bolt 15 lb ft 21 N•m Fuel Injection Pump Assembly to Cylinder Block Bolt 18 lb ft 25 N•m Fuel Injection Pump to Bracket Bolt 20 lb ft 28 N•m Fuel Injection Pump Drive Gear Nut 52 lb ft 70 N•m Fuel Line Bracket Nut 15 lb ft 21 N•m. 5-02 Dodge Cummins Steel Fuel Return Line from VP44 to T Fitting 3945707 Save 1% 98. Map (Boost) Sensor 9. on a Mechanical fuel pump could i cap off the return line and the car still run the reason i ask is the car needs to have a marine tank in the back seat and there's no where to hook up a return on the tank. Getting a quality piece that works the way it should, helps you save a lot of money on fuel and also helps keep the engine running smoothly. Big Block Chevy V8. Eventually, more and more solids from the tank will reach the filter and over time, plug the filter. Replied by JTF on topic Fuel pressure Regulator - return line In the picture the arrow appears to be pointing to a vacuum line for engine load to fuel pressure regulator. On a CJ you have a gas return line coming off the fuel filter going back to the tank correct, I was talking to someone today & they said that if you remove the return line going to the tank & vent the tank return line to the charcole canister or add a check valve it will help in the performance of the JeeP/carb/engine since the carb will get 100% of the fuel that the fuel pump is delivering to it. Blocked air reference lines, or a blocked fuel manifold valve vent, can create a symptom similar to a clogged injector nozzle by not allowing the fuel to atomize properly. Shop Fuel System Plumbing for the Dodge 6. Further to blocked return fuel line on 3sgte. In order for the fuel injection system to fulfill its purpose, fuel must be transferred to it from the fuel tank. If your fuel line is blocked or leaking, your engine won’t get enough fuel, or it’ll get fuel in inconsistent spurts. The magic number for LS engines is 60 psi at the rails. The JPC return style fuel system is a direct replacement for your stock fuel assembly, while also utilizing the stock level sender placement. Plastic line, curves along top of engine. Most mechanical fuel pumps have a weep hole on the bottom of the unit. The Carter also runs wet, so it dislikes water. Tank's, Inc. Once the injectors itself or the filter basket becomes clogged, no amount of intake or fuel rail induced injector cleaner will resolve the problem. There may be various reasons for a malfunctioning fuel pump. 9 TDI PD130 which has a "fuel cooler" fitted in the fuel return line under the front floor pan. Ford F-250: Fuel System Maintenance. I'm not familiar with anything called a fuel return line on my Ford, but maybe somebody who knows JD tractors will comment. They fit any 4-bbl intake manifold (including 4500 flange) and is the most self-contained and full-featured unit of this type. Car had been sitting for several years, removed tank last night and return line near the pump was blocked with gunk. Fuel pressure should be a constant 10 - 15 PSI on a TBI fuel injection system and is typically around 12 - 13 psi. Couldn't exactly find it but I am assuming it is the connection. Even then it was very tight quarters. There was no return port on the fuel pump and thus no return line. Fuel pump signal, 97 Honda Passport 3. One of the sytems I worked on had inlet and outlet banjo fittings that were nearly identical, except for an orifice and often assembled wrong, resulting in what you describe. A fuel injector is considered to be clogged if the amount of debris or gunk inside the injector or filter basket has built up to such an extent that it does not allow fuel to flow through. Bonneville Fuel Filter Vapor Return Line w/AC. Edelbrock has been delivering the best combination of dyno proven electronic fuel injection performance for over 40 years. com and there is a picture of it on the web site. Fuel Line Fittings found in: Our new fuel lines are made tough. Also, you may see an incoming fuel line and a return fuel line connected to it, depending on your particular configuration. General Motors took their popular engine block casting used for the 350 and 305 cubic inch displacement V-8's and cut two cylinders off. Recommended MINIMUM Feed Line Size: 3/8" (or -6AN) up to 450 hp; 1/2" (or -8AN) up to 550 hp Recommended Pre-Filter: Factory In-Tank Filter or RobbMc PN 1024 Chevy SB 550HP Fuel Pump Installation Instructions and Troubleshooting Guide. Replaces original GM part numbers; 6416739 , 6416740 , and 6470424 perfectly. Step 6 Use the screwdriver to remove the return line and tank mounting screw. When I pinch the return line, I can see maybe a 1/2 psi bump in. BLOCK YOUR INTAKE PORTS IMMEDIATELY BEFORE ANYTHING ELSE! Disconnect your battery, and relieve the fuel pressure from the system at the fuel rail (either with a vent on a fuel pressure gauge, or pressing in the valve pin holding a shop rag over it to catch any excess) http://i16. Black and clear anodized finish. This line goes from our 24 gal fuel tank -6 fitting, to our hard line kit (filter) Braided SS hose with preinstalled fittings, comes with A/N to inverted flare. The entire system needs to be setup in a way that helps to purge air. If the fuel system is getting air in it, it may run at slow speeds, but stumble at high speeds when more fuel is needed and it can't be pulled in by the fuel pump with an air leak. There are several sizes available, but the basic breakdown is for either 31/48-inch or 11/42-inch fuel line. This is about 70psi for most GM pumps and drops as the pump wears out. The fuel lines are simpler, because the lines do not cross when connected normally. Fuel tank may be building pressure if the fuel cap is plugged or not breathing correctly. I dont think it will allow fuel to return to the tank, as it is used to vent the fuel tank into the charcoal cannister. AN LS stock fuel rail setup utilizes 3/8 inch quick connects on the feed and 5/16 quick connects on the return, both available from Hot Rod fuel hose LS swap kits. Find CHEVROLET 4. Classic Tube Fuel Return Line for 1994 Jeep Wrangler YJ with 20 Gallon Fuel Tank. I was planning on using the existing 5/16 return line. This is an accurate reproduction of the line that runs from the vapor separator on the engine to the fuel return line at the frame. •Fuel piping shall not be galvanized steel or copper. When the internal diaphragm leaks, fuel escapes through the weep hole to notify the vehicle owner of a malfunction. If fuel is not making it to the injectors, check if the fuel return line is blocked. You can verify this by pinching off the fuel return line to see if the pressure rises. It also has issues running when first starting up it runs good, then when I rev it up it runs horible then I noticed the fuel leak dripping on the floor. It works very well and your pressure will be dead steady at all engine speeds. Tank's, Inc. The high return fuel flow directly effects fuel pressure from the fuel pump that feeds the unit pumps for high pressure injection and the doser injector that supplies fuel to the doser injector during regeneration. The MotoBlue HP Series Large Bore Fuel Rails are designed to bolt down to the 2005-2010 GT intake manifold. A flooded carburetor may cause engine stalling and hard starting until it is cleared, or enough fuel has evaporated. 3L/262 GM V6 Fuel Lines, Fuel Return Lines and get Free Shipping on Orders Over $99 at Summit Racing!. There is an O ring that eventually hammers a flat spot on the quick connecter. The feed line goes to the rear of the fuel log next to the firewall. Search our site of over 16,000 Case parts. I know when replaced the fuel pump on my older boat it was not set up with a fitting on the carb to accept the emergency return. The new fuel tank system was designed to accommodate future LEV 2 emission requirements. Vechicle Model Engine Type Product List. I'm looking into buying a new fuel pressure regulator, and I'm not sure if a non return style regulator will be sufficient with this pump even though the pump already has a bypass. Find CHEVROLET 4. Locate the mechanical fuel pump on your engine block. Purpose: this kit purpose is to increase fuel delivery to the stock rail and injectors BY removing a major restriction in the fuel line, discount 3 banjo bolts and the Fuel Pulsation Dampener. Drained my pass. I've sold a couple thousand carbs that were going on 40's with the pancake fuel pump. The LG-X Series Fuel Conditioner is installed in-line on the fuel line between the fuel tank and the primary filter on any type of diesel powered equipment, whether a truck, construction or farm equipment, generator, marine vessel, fuel dispensing equipment, etc. When there’s excess fuel, it fills up the filter until the fuel level inside reaches the return port. the fuel return line is leaking at the plastic connector after the engine has been shut off about 5 min. Fuel Dampener Bypass Mod. An NA-9 set up will have a sealed gas cap and the three vent lines in the tank body. I finally found the problem. But in a returnless system, there is no pressure regulator on the fuel supply rail and no return line back to the tank. Filter clogged. well, i will be doing the V8 conversion to my mav shortly, and i was debating on using a mechanical or electric fuel pump (the engine is a 5. A return-style regulator allows fuel to flow back into the tank. I'm going to try and dig the "O" ring out and replace it. When installing a bottom sump with your AirDog or Fass Pump most trucks end up with an open fuel supply and or return line. If it is the latter, the return line must have a restriction somewhere to ensure the injectors are flooded with fuel. 9 , it has a B1 Bomber turbo, Banks intercooler and high ram intake, this turbo puts out about 44 psi, the guy has the fuel return line blocked off and i dont know why, the head gasket was leakin tons of oil, they O ringed the head wrong, i had it decked , O rings removed and wanna put a stock turbo back on for dependability, will running 44 psi boost blow the. Check engine light came on. The pressure drop from rail to tank is taken up in two parts. This heavy duty black anodized billet aluminum fuel pump mount is designed to serve as the mechanical fuel pump block off while also providing a secure and easy to install fuel pump mounting option. Includes: fuel filter, fuel lines, grommet, gasket, fuel tank vent and purge bulb. If the fuel return hose becomes blocked or kinked it may cause the carburetor to flood from excessive fuel or pressure buildup. If fuel pressure is less than specifications, the regulator may be leaking. Flows 200 gph with 25 to 75 psi adjustability. Upon first use, check for leaks! WARNING • If fuel is leaking: Stop engine, and re-secure hose and clamp. The overflow valve (a check valve) is used to route excess fuel through the fuel return line and back to the fuel tank. If your fuel tank was full of sludge, the fuel lines were probably clogged also. Serious Harmful HVAC Issues | Effects of a Clogged HVAC Air Filter. With a reputation for innovation, quality, and service, our products push the limits of diesel performance technology. Repeat for all eight injectors. So is the valve. what are possible causes and solutions? Thx. Doing so can damage the oil pump at the oil burner, or worse, cause a dangerous leak of oil into the building if the higher pressure on the return line (caused by a blocked oil pipe) causes the oil pump (fuel unit) to blow a gasket. The fuel rail pressure sensor for the Cummins 6. The pump constantly sends fuel to the filter. A flooded carburetor may cause engine stalling and hard starting until it is cleared, or enough fuel has evaporated. There is no return line and the pump needs a lot of pressure and flow to operate properly, 72. Regulation pressure is preset at 20 psi, which is optimal for high RPM CP3 pump operation. If you're struggling to accelerate, especially on the highway, or you notice other signs your car might not be getting enough gas, the problem can be caused by a partially blocked or clogged fuel line, fuel. LET DRIP OVER NIGHT AND THEN BLOW LINE OUT WITH COMPRESSED AIR, REPEAT AS NECESSARY, OURS TOOK ABOUT 7 DAYS BUT IT WAS PLUGGED TIGHT. well, i will be doing the V8 conversion to my mav shortly, and i was debating on using a mechanical or electric fuel pump (the engine is a 5. Make sure the valve is not clogged. The needle valve is closed at initial position by the force developed by the preloaded spring. I am considering a return line to add a little extra protection, but it will throw off my fuel flowmeter/fuel used readings. In order for the fuel injection system to fulfill its purpose, fuel must be transferred to it from the fuel tank. Basically, the fuel rail is at some pressure fixed by the fuel pressure regulator. The lines leave the tank in a natural over/under orientation which matches the upper and lower pipes on the fuel distributor. Hope this helps you. My suggestion here is to add. Try running a gallon of cheap laquer thinner through the system a few times. Fuel mileage directly impacts the budget of every large diesel fuel user and the financial bottom line of the small one. My galaxy turned over fine and started for a few seconds and then stopped. When using return-style regulators, it's important that the return line is within one size of the feed line. Symptoms of a dirty fuel filter include losing power while driving uphill, problems starting the car, stalling, grinding noises in the engine, the smell of gas fumes and an engine that misfires frequently. The original ISL engine feautured a fuel pump similiar to the ISC. The regulator spring and piston are located inside the fuel return housing where the return fuel line is connected. Note: the tendency on newer vehicle models is to place the fuel pressure regulator inside the fuel tank as part of the fuel pump assembly. I drilled 2 holes in the top that fit the hoses very tight. I also like the T-rex inline fuel pump, that the blown mustang boys use, to help ease the burden on the in-tank pump. Shop safely with us online or call 888-844-3393 and buy the quality part your car or truck needs today. Classic Industries offers a wide selection of OE Fuel Lines for your Chevrolet Camaro. When it is necessary to lift oil to the burner, a return line should be connected between the fuel pump and tank. 3/8 diameter fuel hose inlet and this pump does not have a provision for the vent vapor return line. Being proactive with routine maintenance can save you time, money, and downtime. Shop safely with us online or call 888-844-3393 and buy the quality part your car or truck needs today. This screw was behind the return fuel line. Find the fitting; it is typically on the fuel rail. Push the larger vent line about an inch into the tank. Introduction. open or shorted electrical circuit and 3. my set up required that i tee this line into the return line -08an coming from the regulator and return both to the tank. Its function is to prevent foreign particles from reaching the fuel injec-tors. •There shall be no shut-off in the fuel return line to the tank. Required fields are marked *. That leak, especially if more than one injector was affected, would increase the demand for the fuel injection pump to provide high pressure fuel flow. After months of banging my head against the wall. Fuel System LIFT PUMP BUNDLE: [SasquatchParts In-Tank Lift-Pump Adapter Harness] + [Carter In-Tank Lift Fuel Pump] for Jeep Liberty 2. Chevrolet Camaro Parts - OE Fuel Lines. Edelbrock has been delivering the best combination of dyno proven electronic fuel injection performance for over 40 years. I can't seem to find the pressure relief valve on a '02 Duramax LB7. Loosen the fuel lines is a common practice for older diesel vehicles. Install injection pump timing hole cover. Find Craftsman String Trimmer Parts at RepairClinic. You can verify this by pinching off the fuel return line to see if the pressure rises. The one way valve is then connected to the hose that goes to the hard line to the tank. 6L Duramax is an affordable option to the factory replacement. They are typically made of ¼" diameter tubing. Air - Vacuum in fuel supply and Blocked fuel supply This is similar to insufficient fuel supply, but dirty fuel filters or a faulty filter head assembly may also cause fuel supply issues and hard starting. Fuel Regulator Failures. If the cascade over flow valve is bad this can send fuel out the return line instead of to the charging circuit of the CP3 pump, resulting in low rail pressure. The quickest I can get a new sending unit & pump is 5 days (16 gal front swb truck). The Jeep conversion industry has seen various evolutions of fuel system modifications to accommodate modern fuel injection engines, including the installation of external fuel pumps and the installation of various variable pressure regulator systems. The Bosch® P7100 in-line fuel injection pump has a jump- over tube to route return fuel and entrapped air from the pressure relief valve directly to the supply tank. Manufactured with a -8 fitting and a tapered hole for max breathing. It is a hard line to hard line connection or a hole near the connection. Also, the vent line cannot have a dip in it where fuel or condensation can get trapped in the line. 7 Liter Diesel Engine in DR Trucks. If the flare fails it will leak between the line and the fitting in the middle not the threads. It has an adjustable #8 bypass. Not every car, truck and SUV uses the same fuel delivery system. Best Answer: normally when the vent is blocked the fuel wont come out of the tank freely as the fuel comes out the air replaces the volume of fuel taken out so if you get lack of fuel coming out of the tank to the engine the car will be sluggish and under powered at the least or at the worst no fuel will get thru so engine wont start at all. There is no option for a return line with that carb. This is accomplished by tying the end of each fuel rail together through a Bypass Fuel Pressure Regulator. Injection pump return fuel line or fittings restricted. This screw was behind the return fuel line. Engines with a return line need to have it intact or you will be creating over pressure on the entire fuel system. the fuel return line is leaking at the plastic connector after the engine has been shut off about 5 min. There was no check valve at the junction, only a return line going into the tee, and two return lines coming out of the tee, one for each fuel tank. The ones that do start will start rough and sound like the engine has a bad miss or fuel knock. Even then it was very tight quarters. I have one other question should I have pressure in the fuel tank when my gti is just sitting there not running? when I go to refuel I notice a lot of pressure at the cap when I unscrew it. Tractorstuff Has A Huge Selection Of New And Used Tractor, Backhoe & Dozer Parts For Case. photobucket. 9L Diesel, 9 - Engine, 6. Injector return line Car sat in a container for 6 weeks on a boat across the Atlantic and there was half a tank of fuel in it. Video on how to replace the fuel lines on both the 6. Can I run a fuel return line with this set up, Just with a "T" installed in the pumped fuel side. Symptoms of a dirty fuel filter include losing power while driving uphill, problems starting the car, stalling, grinding noises in the engine, the smell of gas fumes and an engine that misfires frequently. Fleece Performance Engineering is a leading manufacturer of aftermarket diesel performance products. Black and clear anodized finish. Drained my pass. I used fuel line and drilled a hole in the top of my spark arrestor creating a tight fit for the line. It looks like it is next to the turbo on the drivers side. 20 + 45° Crankshaft bearing cap to cylinder block. the chevy small block fuel pump. Fuel Pressure Leak-Down Test An area often overlooked is the performance of the fuel system not while the engine is running, but when it is shut off. There are three options for installing a bypass return line: NOTE: If a fuel return line is not present, modifications to the fuel tank are required to route the fuel return line through. , to condition and polish the fuel as the equipment is operated. Shop fuel hose & line in store or online now!. I'd probably spring for a permanently installed small pressure gauge, too, downstream of the regulator, just to be sure of my pressure at all throttle conditions. This would cause you to dump more fuel into the engine, plus cause the fuel system components to be overworked, which could lead to other failures. Have 2007 Silverado 2500 w/ 6. Blow through the fuel return line to check that it's not blocked. Remove the right fuel rail cover. Then I disconnected the outlet or return line from fuel pressure regulator and attached a piece of fuel line to it and stuck it in a bucket. The return line circuit has a pressure regulator to maintain this desired pressure. Install injection pump timing hole cover. Modification Fuel system modification is carried out because the car is running lean at high loads – it needs more fuel than the standard fuel system can provide. This line is not submerged in the fuel. Is there a formula to determine how much horsepower a certain fuel line size will support? I have -10 up and back to my regulator. Fuel line leak, DIY replacement options was created by ChefAdam Disclaimer: my experience with auto repair is not extensive and my car repair vocabulary is limited and growing. Cummins is expanding fuel system manufacturing capabilities in other areas of the world to ensure future growth and support in emerging global markets. Black and clear anodized finish. We are trying to plug those fuel pump lines because that tank was rust damaged and only want to use one fuel tank. This will be close to the tank, versus running a return line all the way from the EFI. There was no return port on the fuel pump and thus no return line. Heating and Air-con ; Hose Overbraid ; Hoses and Clips ; Instruments. If it does, it means the regulator needs to be replaced. Although there are many products such as injection cleaning additives that claim it can clean or unclog a clogged fuel injector while it is in the engine, they cannot. I forgot to say that there are four fuel fittings on the regulator and one vacuum port on it. Air can enter the system through any break in the fuel line or via a bleedback condition. This is done to help rid the fuel of air and to allow it to cool. fuel return line is blocked. 7L Cummins 2007. Apart from leaking, fuel lines can also become blocked. any ideas? thanks. JEGS carries fuel system accessories like carburetor fuel line fittings, dual feed carb line kits, chrome fuel lines, braided carb fuel line kits and more at the best prices available. Mechanical fuel pump, fitted to cylinder head. Connect you new return line to the stock return, and plug the evap line left over in the front with something, just to help keep dirt out if ever going back. "How to Replace the Replacement Fuel Lines on a Mantis Tiller. The pickup unit (which also holds the fuel level sender) has two hard lines on it, one for pickup and one for return - the pickup line has a rubber foot with a bypass valve on the side in case it gets clogged, while the return line is terminated with an anti-siphon nipple, which is a little piece of rubber with a sort of slit in it that opens. JEGS carries a huge selection of braided hose, AN Hose Ends, NPT to AN adapter fittings, plugs, fuel line, fuel line fittings, banjo fittings and much more. Ensure hose is not clogged with dirt or particles before installing. I drilled 2 holes in the top that fit the hoses very tight. Fuel return line to fuel pressure regulator. 3525: our friendly sales staff will gladly help you. Plug the fuel return line fitting with a suitable tool (CH-50377-A). 9/16-18 ports.