Mitsubishi Montero & Montero Sport This sport utility vehicle offers more size than the other Mitsubishi SUVs, but manages to keep a sporty look and comfortable feel, unlike many larger SUVs.

No Fire

  #1  
Old 02-23-2018, 05:36 PM
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Default 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....
 
  #2  
Old 02-25-2018, 04:31 PM
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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?
 
  #3  
Old 02-25-2018, 04:32 PM
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Just for kicks - connect old PCM with new injectors and see what happens.
 
  #4  
Old 02-26-2018, 05:16 PM
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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....
 
  #5  
Old 02-26-2018, 07:44 PM
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Fuel pressure might be too low. On a 3.5l engine the spec is 47-50 PSI at idle
 
  #6  
Old 03-15-2018, 05:43 AM
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Not even a sputter... I can hear the injectors open with the steth but to no avail...
 
  #7  
Old 03-15-2018, 04:09 PM
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Next two items to check is spark and compression.
 
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