How to tell if I need to replace my Ecm? I’m getting a slight haze at idle that smells pretty strongly of fuel, and a rattle sound on the driver side of the motor at takeoff. ... Inspecting the exhaust manifold ports for signs of wetness seeping can also tell you what cylinder has the bad injector. While many drivers choose fuel additives to improve performance, the stiction that is causing an injector failure requires a Stiction Eliminator oil additive. i used a big washer at the end … It's on my son's 300zx, and they're under the plenum so they can't be easily removed. Okay guys I am wondering if there is any way to fix a stuck injector without removing it? The line between the injector and the fuel supply needs to be removed. However, there are typically clear signs that your fuel injector needs to be replaced but if you are unsure, you can take it to your trusted diesel repair shop. Smelling fuel from within the vehicle is never a good sign. The cap is a specialized tool produced by Cummins. I would like to hear opinions about finding a stuck open injector. Odor and Temperature: An injector that is stuck open or partially closed will emit an unburnt fuel odor in the engine compartment. Occasionally, the problem may be coming from your fuel lines, or a damaged sensor urging the ECU to inject extra fuel than necessary. 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. Rough Running. fuel injector stuck open symptoms; ফরিদপুরে আদালতের নিষেধাজ্ঞা অমান্য করে বিরোধীয় সম্পত্তি দখল In modern common rail diesel engines, fuel pressures … How To test if an injector is stuck open 6.7 powerstroke Hey guys, I’m starting to wonder if I don’t have an injector stuck open. A dead injector will cause the engine start and operate when it is cold but not when it is warm. By the time I woke up at 3pm, the dealership found it was a stuck open injector and already replaced the injector and had the truck running. The truck started on the forth key cycle after running the lift … That is actually the vaporized fuel, so you should be able to smell diesel as well. I have a 97 tahoe 4x4 egr motor. Now guys the truck could at least start warm before without aid, and with the injector stuck open. Lower Fuel Efficiency. The fuel injectors in your vehicle are designed to spray fuel into the cylinders of your engine where it is combined with air and compressed before being ignited by the spark plug to produce power. Thus the “failed” injector myth. confession: the stuck injector isn't on the Porsche. It arrives via a nozzle that is opened and closed with a needle valve.The opening and closing of the valve is operated by a solenoid. I don't about everyone else, but what it tells ME, is that the FICM and FICM harness are good. If you run a KOEO Injector Buzz test, and that returns a PASS result, what does THAT tell you? Here is the deal, I haven't had this truck long I bought it in MI 3 weeks ago and then moved to ND. '90 maxima 245,000 miles…over the course of a few days all three rear injectors (1,3,5) are stuck open and dumping fuel…lots of white smoke and fuel smell. Diesel fuel injectors.If there is a injector(s) stuck open would it still ohm out or does that have any connection?I am losing pressure I think because it won't start nor stay running after a shot of ether. In terms of your diesel fuel injectors, fuel efficiency is all about the right amount of … The Injector is hooked to the 12 volt line.. the ECU is the device that will pull the Injector Coil to ground opening it .. I bought it with 119,000 miles but I know the injectors were replaced in 06 under warranty at 89,000. I think i have an injector sticking open. I can rule out low compression because when rotating the engine by hand after reassembly, the same effort is required to move each cylinder through the compression stroke, and no leakage is heard through intake or exhaust. It is a sign that fuel is leaking, and if the smell is making its way into the cabin you may have deterioration elsewhere in the vehicle. The injector requires power to open it.. the lack of a ground will cause it to close.. and misses on a couple till they warm up usual bit of smoke then it clears once shes popping all 8. Diesel injectors require high pressure to function, and this pressure can drive the fuel out through a leak in the injector nozzle or tip, or in a line nearby. Fuel Injector Sound – By using an engine stethoscope, you can listen to your car’s engine. Most fuels contain ethanol. This is often counter-intuitive to diesel owners who consider the injector as part of the fuel system, not the oil system. If the injector is open all the time, then it's toast.. How to Prevent Future Fuel Injector Problems If your injectors are bad, they will need to be replaced. one ore multiple cylinders are not firing. Test leaking Fuel Injectors.. Fuel injector leak testing should be done under operating pressure. This is a harder sign to look out for because if it increases very gradually over time it can be very hard for the driver to tell the difference between how it … Remove and test all injectors - … Ethanol is hygroscopic thus drawing moisture from the air into the fuel. If that doesn’t help, each cylinder will have to be isolated to identify which one is causing the problem. In this cold weather we have had, it starts ok for old spark plugs, but it has a slow idle,. Every 6.0l Powerstroke diesel injector has two spool valves: one that fires the injector by allowing high pressure oil in, and another to let it out which stops the fuel delivery. In this case, this ICP voltage is also a great indicator the IPR is stuck open. OBD scanner reads 140 with key on, 1260-1420 while cranking, jumps to 4700 when trying to start and when it does start for just a second the pressure jumps to 16,000. You may have to register before you can post: click the register link above to proceed. The key is to replace them with the best fuel injectors you can buy, so you can get the reliable performance you need from your diesel engine. if it still won't come loose like mine, weld a piece of allthread to it and make a slidehammer puller. The average DIY fuel injector cleaning project and most automotive repair shops does not have the proper diagnostic equipment or the ability to test leaking injectors or clean them properly. My question is how can i diagnose which injector … It also tells ME the injectors are "good" on the ELECTRICAL end (you can ohm out the OPEN +/- and CLOSE +/- to verify this). If you are working on a common rail diesel fuel system, the injector rail pressure PID is the telltale PID on fuel pressure. I'm a little worried about the bottom end now, should I be? They acts the same as a bad coil, a broken spark plug wire or a bad spark plug. Control units could also be faulty or trying to make sense of false positive measurements from a faulty injector. Had it towed to the dealer and drop'd off at 5:13 am. Injector sticking open - symptoms? I figured with the knowledge pool in this forum, someone would know a trick or two. I'm guessing the plunger which is pressed down by the high pressure oil inside the injector is stuck slightly down at all times, forcing the nozzle needle to be slightly lifted and therefore allowing the fuel inlet to flow directly into the cylinder at all times, whether or not the injector is pulsing. Anyway, I took it to the dealer and they did some testing and are now telling me the CP3 is bad. I know hydrolocking a engine can bend rods and hammer bearings. Old fuel, carbon and residue inside the fuel cause fuel injectors and/or their filter baskets to become clogged. How to Prevent Future Fuel Injector Problems. Answer: The easiest way is to listen to the injector with a mechanic's stethoscope or a length of hose. Doesn't seem like there's air in the system. A diesel technician can perform tests to see if a fuel injector has failed. Fuel odor – This goes hand in hand with fuel leakage, but when your gasoline fails to burn due to faulty injector, or even one which is stuck open, the smell of gasoline will be high. I just replaced my injectors, new filters, new connector tubes. Primer gets rock solid, no visible leaks at least in easy to access areas. A fuel injector can go bad mechanically or electrically. It is suggested that you have your leaking fuel injector sent to Injector RX for testing and cleaning. However, if the injector is clogged, even if it's working it'll not spray any fuel. After disassembly of the engine often panting, smoke phenomenon, which mostly diesel injector nozzle card due to death. Even though a lot of can be detected with the proper scan tools, a number of Ford 6.0 injector problems can only be pinpointed if you know where and how to look. If a nozzle breaks, sealing oring tears, or injector hangs open one of the engine cylinders will fill up with fuel. You should hear a clicking sound as the injector's valve opens and closes. ... and maybe even the charge of the stuck injector's cylinder is combustible. i had one come unscrewed on me when carbon stuck it in the bore. My 06 after sitting all night when you crank it up smokes like a tar kettle i mean it bellows white colored smoke like an injector is sticking open and dumping fuel on top of one piston. Mechanic told me to replace the fuel injectors, that they are bad. ... 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