oldmopars
NAXJA Forum User
- Location
- Roy Washington
Hey all,
I just bought this 87 MJ with a 2.5L and FI. I scored it real cheap($400) because it ran real bad.
Here is the trouble. It starts and runs, but runs real rough, like it not hitting on all cylinders. I pulled the plugs and they are all gas fouled. I cleaned them, put them back in and it does the same thing and fouls out the plugs. I checked compression and all 4 are around 100psi. It seems that the FI is dumping way more fuel than it should.
It has new plugs, cap, rotor, wires and other tune up stuff. Cat converter is new(but may be shot soon if I don't fix it).
What should I check? Any suggestions?
Thanks
Scott
87 MJ 2.5L 5sp 4X4
I just bought this 87 MJ with a 2.5L and FI. I scored it real cheap($400) because it ran real bad.
Here is the trouble. It starts and runs, but runs real rough, like it not hitting on all cylinders. I pulled the plugs and they are all gas fouled. I cleaned them, put them back in and it does the same thing and fouls out the plugs. I checked compression and all 4 are around 100psi. It seems that the FI is dumping way more fuel than it should.
It has new plugs, cap, rotor, wires and other tune up stuff. Cat converter is new(but may be shot soon if I don't fix it).
What should I check? Any suggestions?
Thanks
Scott
87 MJ 2.5L 5sp 4X4