from their shop. Do not run the engine long with the fuel line disconnected or it will ruin the injector, which is now running dry. The first injector that hydro the engine, they changed the oil 2 or 3 times to get all the diesel out. You Can Smell Fuel. Spray the area around the fuel injector mating area -- where it connects to the rail or manifold -- with a liberal amount of penetrating oil and allow it to sit for ten minutes or so. The soiling is then easy to remove and the injector can be effortlessly removed, without damage. FICM voltage is … It is often located on the top side of the engine. The functions of a fuel injection system include feeding fuel to the injectors, adjusting the fuel quantity, adjusting the injection timing, and atomising the fuel. The other was on my carwhen it descided to stick open and stall out the engine. I bought it knowing it needed an injector replaced, and also had trouble starting. Leaking Injector - If the O-ring fitted to the injector is the problem, then replacing this ring will usually fix the leak. The one that's stuck closed was a little rusty at the tip. In this case, there may be an odor of unburned fuel in the engine compartment, coming through the vents, or even out of the tail pipe. A crow's foot pry-bar works the best. The wire harness right above the exhaust crossover pipe will melt together and cause multiple problems. © Copyright 2013 | UK ERIK PRECISION MACHINERY CO., LTD. All rights reserved. If the nozzle needle stuck in the open, cut the cylinder oil, different sound and white smoke disappeared; If the needle stuck in the closed state, the cylinder off the oil off the cylinder oil, engine ignition unchanged . The owner admitted that he had just picked up the vehicle from another shop that could not fix it. All diesel fuel injectors have the same basic characteristic in that they allow fuel to enter the combustion chamber of the engine under greater pressure than that already inside the chamber. Make sure that the injector is pulled straight out of the bore in relation to the bore's direction, lifting the injector at an angle can wedge the injector inside the bore. First thing I did was check glow plugs, found 6 to be bad so I replaced all 8. Use the open end part, take the longer side and get it under the injector (right under where the bolt goes through) and push down on the opposite end like a lever and the injector will pop right out. The injectors 5, 7 came out smoothly with little issues. A quick video to show how to identify and fix a vintage injector with a stuck pintle. The 4 on the passenger … An injector can be removed from a diesel engine in about 30 minutes. If you have injectors that plug into the top of the rail and pass through, then spray around the bottom of the injector as will. Lucky for me I live about 20mins. The symptoms of a stuck-open or incompletely closing fuel injector are quite different than an injector that is completely dead or partially clogged. You could disconnect the main lines over the drivers side valve cover and hook up hoses to a 5 gallon bucket. While the engine is warm, use a laser thermometer and point it at the exhaust manifold pipes. I am in the process of replacing all 8 injectors in my truck and thought I would pass on this method for pulling out a stuck injector. First remove the valve cover, then crank the engine and let it idle. Slip on the injector puller tube, aligning the notches on the tube with the injector bleed tubes. So I … Well, my truck starts terribly. you could remove the rail from the head. It needs to idle for about 5 minutes before it will even move under its own power. Stuck Open Fuel Injector (how to fix) Print 2001 Dodge Grand Caravan 3.3 with a #5 injector control wire shorted to ground. Once it is verified that the injector is completely clean, new filter baskets can now be installed. While tearing down the engine and using my diesel injector tester, I found that someone had already replaced all the injectors on the passenger side. If the injector body, nozzle or internal components are cracked, then a new or refurbished injector is your only option. It shakes, blows black smoke, and occasionally stalls shortly after starting. An injector that is stuck closed will give you a reading of 200 to 250F, and one that is stuck open will cause the temperature to rise up to 600F or more. The water in the fuel cause internal components to rust. best way is to remove the injector and get them tested. The first injector that hydro the engine, they changed the oil 2 or 3 times to get all the diesel out. then w/ the injectors still in the rail and clips attached jumper Fp and B+. A really good smack might be … It shakes, blows black smoke, and occasionally stalls shortly after starting. The diesel engine, unlike the gasoline engine, injects fuel directly into the cylinder. To unclog a clogged fuel injector properly the filter basket must be removed. Replacement fuel injector seals and washers are cheap and fairly easy to fit. Fuel injectors are often needlessly replaced when they develop a leak. The chemicals in bio diesel are very strong and will clean anything causing it to stick. Run BioDiesel through the motor. Stuck Open Fuel Injector (how to fix) Print 2001 Dodge Grand Caravan 3.3 with a #5 injector control wire shorted to ground. Each cylinder should read plus or minus 30 of 450F degrees. To use a slide type of hammer tool, you will need to remove the injector top. Step 1. Cummins recommends a simple visual test to start. The wire harness right above the exhaust crossover pipe will melt together and cause multiple problems. The fuel injection system is a critical component of every diesel engine. Open the hood by pulling the release lever inside the vehicle. For a more thorough fix and rebuild, you can alternatively send it to a professional injector cleaning shop.The driving signal was a 12V pulse of 100 Hz at 25 % duty cycle. the problem w/ this is the fuel pressure will try to blow the injectors out of the rail since nothing is holding them in now. Over time, diesel fuel injectors wear out and fail to close completely. Once it's up to temperature, it runs like a top. The fix was I took a mini torch, put it inbetween the the block and the injector for about a minute, within 2 minutes I had the injector out without even using a slide hammer. It is a sign that fuel is … In the case of stubborn deposits, Reiner Schönfelder recommends allowing the Injector Dismantling Aid to take effect overnight. Removing a diesel fuel injector is a simple process; however, it does require some basic knowledge of the system. When this happens they cause a leak-down, resulting in a reduction of fuel pressure across the fuel rail. Both read about 2.6 ohms, ironic I know. since the car isnt running you shouldnt have any fuel coming from any of the injectors. This is a common issue on the Caravan and Town and Country models. Too much fuel will also flood a cylinder, effectively reducing power. When the nozzle needle stuck in the closed position, there will be a regular in the vicinity of the cylinder head knocking sound, which is due to fuel injection pump when the pressure wave shock caused by the injector. Step 4 Slip the injector nozzle protector onto the injector tip. Ok I hate to make my first post this one, but I have a question. Remove the rear most injector first. Most fuels contain ethanol. ... Ford Powerstroke Diesel Forum. One the engine would be the most secured position to remove a stuck injector, if you remove the head not much benefit but drive the injector out from below or replace the head. Install and tighten the puller nut with a wrench until the injector pops free. Sediment and dirt built up between the pintle shaft and injector body must be cleaned. Once it's up to temperature, it runs like a top. Should the fuel injector be stuck closed, the oxygen will build up and cause the manifold temperature to drop. This system pressurizes and injects the fuel into air that has been compressed in the combustion chamber. So I might change it for the heck of it. Undo the injector bolt (caution – they snap easy) and dig out the retaining clamp and vacuum any loose carbon. After you have decided you have an injector issue, most the times it's possible to have the seized injector removed from its place only by using professional hydraulic equipment (designed specifically to remove a … New job like yours, either a mis drilled hole or foreign object in the bore. Step 2. It works not only with injectors but also when removing … The fuel injection system is a critical component of every diesel engine. Residue from the rust gets into the injectors when the fuel filter is in bad shape. Install the fuel feed block cap on the fuel line to shut off the fuel. The fix was I took a mini torch, put it inbetween the the block and the injector for about a minute, within 2 minutes I had the injector out without even using a slide hammer. Well, my truck starts terribly. I would have to open up my cleaner and hotwire it though. With a light, study the injector body of each cylinder. Along with trouble starting, experiencing engine misfires is a clear bad fuel injector … Put a leather glove on, and hold the injection pump body tight, and lower the body flat on the valve end of the pump body. All diesel fuel injectors have the same basic characteristic in that they allow fuel to enter the combustion chamber of the engine under greater pressure than that already inside the chamber. Smelling fuel from within the vehicle is never a good sign. Ethanol is hygroscopic thus drawing moisture from the air into the fuel. I got my truck last winter with 198K had the same problems you have. This time, the new dealerships work order made no mention of changing the oil. Unfortunately the hum cannot be heard well in the video, but it's there.The fix is to simply whack the body a few times on a hard surface to free the pintle from any crud that was holding it shut. This can cause a difficult- or no-start condition as well as a smokey exhaust. Had them replace my injectors and they found a crack injector cup also. Now place the injectors on a suitable surface. This time, the new dealerships work order made no mention of changing the oil. When that happens the injector cannot spray and when driven with a signal, instead of a loud ringing noise, it will make a much quieter hum. But then I hit 3 and it's well beyond stuck. Engine Misfires. Using the same wrench, pull out the injector carefully and gently. Stop and talked to Dave and his crew, they were great to deal with and will help you anyway they can. Unless the body of the injector is leaking, which is rare, replacing the O-ring seals is all that is needed. They must atomise the fuel to create a spray or mist that mixes readily with the hot air to create uniform clean ignition for efficient combustion. Sounds like one might not of seated properly. Sometimes, if the injector body is cracked externally, you may be able to notice a small wisp of smoke from the injector. After disassembly of the engine often panting, smoke phenomenon, which mostly diesel injector nozzle card due to death. The functions of a fuel injection system include feeding fuel to the injectors, adjusting the fuel quantity, adjusting the injection timing, and atomising the fuel. I have a 2002 LB7 and have spent many hours on this site researching issues with my truck, but this is my first post. They took care of me and my truck starts great now. Locate the valve cover on the engine. Ive been burned by not cleaning the head enough from oil or debris at the head where injector will seat. If stuck, you may need to use a special tool to remove it. Pull the mani and see what cylinder is full of fuel. If the nozzle needle stuck in the open, cut the cylinder oil, different sound and white smoke disappeared; If the needle stuck in the closed state, the cylinder off the oil … This system pressurizes and injects the fuel into air that has been compressed in the combustion chamber. This is a common issue on the Caravan and Town and Country models. Fuel injectors become clogged due to hydrocarbons, sediment and other elements in the fuel. The fix is to simply whack the body a few times on a hard surface to free the pintle from any crud that was holding it shut. I could try leaving them in the sonic cleaner for a day. If you are working with an in-line diesel engine, there will be only one valve cover. Just another idea for people who have one that is hopelessly stuck. Just another idea for people who have one that is hopelessly stuck. But if it does not unstick after … Crack the fuel tank cap, listen for air to hiss. I typically just use the 19mm wrench I used to loosen the injector lines. I'm the new lucky owner of an 02 crew cab dually LB7 I just picked up cheap. Fuel Injector Sound – By using an engine stethoscope, you can listen to your car’s engine. This exposes it to heat and pressure, which might, overtime, damage the fuel injector or decrease its productivity. That's the same reading I get from good injectors. If the multi-cylinder machine to loosen when a high pressure brass cylinder of white smoke, crackling sound disappeared, loosen the Department has a large number of bubbles emerge, indicating that the nozzle needle and the needle cylinder body stuck in the open position; hand to touch a cylinder injector, if a cylinder injector cylinder other than the heat, then prove that the cylinder injector stuck. After hours of prying, using a the Schley injector puller (only to have it bend immediately), and using a slide hammer to try and coax it straight out, it's still stuck in there. Some injectors may be loose enough to remove but others not. They must atomise the fuel to create a spray or mist that mixes readily with the hot air to create uniform clean ignition for efficient combustion. It needs to idle for about 5 minutes before it will even move under its own power.