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-   -   No Fire (https://mitsubishiforum.com/forum/mitsubishi-montero-montero-sport-14/no-fire-51863/)

2001Mitch3.5XS 02-23-2018 05:36 PM

No Fire
 
Ok guys, I have 30 lb. of fuel on the fuel rail.. starts only with starting fluid.... I have 12 volts constant for the fuel injectors.. ?????????????????????????????????????????????????? ???????????????? Computer is new.. Injectors are new.... Puzzled....

HunterD 02-25-2018 04:31 PM

12v constant on fuel injectors is the issue. You suppose to have square wave signal on injectors. I can't confirm is it should be 5v or 12v though. Are you 100% certain that PCM is the right one for your engine?

HunterD 02-25-2018 04:32 PM

Just for kicks - connect old PCM with new injectors and see what happens.

2001Mitch3.5XS 02-26-2018 05:16 PM

Tried the old pcm and put a new pcm on it with the same issue... if i put a stethoscope on it you can hear the click that the injectors are opening and with 30 lb. on the fuel rail I am totally stumped.. I checked the schismatics on it and it should have 12 volts all the time and the negative side goes to the pcm...I D K... Thanks for any input....

HunterD 02-26-2018 07:44 PM

Fuel pressure might be too low. On a 3.5l engine the spec is 47-50 PSI at idle

2001Mitch3.5XS 03-15-2018 05:43 AM

Not even a sputter... I can hear the injectors open with the steth but to no avail...

HunterD 03-15-2018 04:09 PM

Next two items to check is spark and compression.


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