Fuel Injectors wont fire..
01-31-2013, 10:44 PM
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Fuel Injectors wont fire..
Just finished up my clutch replacement, got everything bolted together but when i went to start the car, i notice no fuel is coming out of the injectors. If its not one thing its another i suppose -_- I checked the fuses, they are good. The fuel pump primes, it is brand new. The starter engages. The SECURITY light turns off as its supposed to. Put a test light on one side of each injector pigtail they both have 12v key on. My factory manual calls for something or other tool to test injector pulse, but i dont have one of those. Need a little help. What else should i test? Grounds? ECM is new. Injectors are newish, Fuel filter is new. No kinks in the line etc. Thinking its something electrical..
02-01-2013, 02:52 AM
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Re: Fuel Injectors wont fire..
Found this on another website:
Unhook the 4 pin harness from the back of the distributor.
Attach the clip of your test light to 12V Positive.
Turn on the Ignition.
Tap the purple/white wire on the 4 pin dist harness (IC Reference High) with the test light probe; it should create a test signal and fire the injectors.
I did all this and both injectors clicked, and sprayed a nice cone of fuel. I also OHM'ed the pickup/reluctor coil and it tested within range. Could the ignition module be bad? I just spent a ton of money on the clutch so instead of throwing parts at it and hoping it works, i want to fix it properly.
Unhook the 4 pin harness from the back of the distributor.
Attach the clip of your test light to 12V Positive.
Turn on the Ignition.
Tap the purple/white wire on the 4 pin dist harness (IC Reference High) with the test light probe; it should create a test signal and fire the injectors.
I did all this and both injectors clicked, and sprayed a nice cone of fuel. I also OHM'ed the pickup/reluctor coil and it tested within range. Could the ignition module be bad? I just spent a ton of money on the clutch so instead of throwing parts at it and hoping it works, i want to fix it properly.
02-02-2013, 12:30 AM
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Re: Fuel Injectors wont fire..
Had the module tested. It tested good, but i bought a new one anyway because it was in poor condition. Worked good for a little while, but the issues are back. Was able to get it started but it runs poorly and stalls now. Still with the occosional lack of injector spray
Last edited by onewheelpeel; 02-02-2013 at 12:41 AM.
02-02-2013, 01:42 AM
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Car: 1985 Volvo turbodiesel
Engine: 1989 305 TPI in the Volvo
Transmission: 1990 700r4
Axle/Gears: 3.73 Dana 30
Re: Fuel Injectors wont fire..
Unconnected ground wire? Make sure you have a good circuit to the block etc. Getting any codes?
02-02-2013, 01:51 AM
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Re: Fuel Injectors wont fire..
From what i can tell all the ground at the back of the cylinder heads are still connected. No codes being shown ATM.
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