I have a 1991 Cherokee Laredo and I just rebuilt the 4.0 engine and put it back in. I replaced all the spark wires and cap and rotor and now it has spark but to fuel. The fuel injectors work because i tested them and all of the wires going to and from the injectors are good. I took off the rail and tried starting it to see if fuel would come out and they aren’t even clicking. Anything I’m missing?
CF Veteran
So no fuel?
I would check the fuel pressure in the rail.
Do you hear the fuel pump turning on when you turn the key?
I would check the fuel pressure in the rail.
Do you hear the fuel pump turning on when you turn the key?
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May 16, 2024
- Join DateAug 2011
- LocationPrescott, Az
- Posts:43,971
- Year1990
- ModelCherokee (XJ)
- Engine4.0
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Quote:
Doubtful. Look and see if you accidentally unplugged the fuel pump ballast resistor in your procedure.Originally Posted by Trevsm01
Could it be the computer? Ecm/ecu
CF Veteran
Your going to need to test the pressure, with a pressure gauge.
Have you ever thought about ever changing your fuel filter?
The computer/ecm should be the last thing on your mind to replace. When you have exhausted all other resources.
Have you ever thought about ever changing your fuel filter?
The computer/ecm should be the last thing on your mind to replace. When you have exhausted all other resources.