1990 Jeep Cherokee 4.0 (Renix) Help
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Model: Cherokee
1990 Jeep Cherokee 4.0 (Renix) Help
Hi everyone, I have a 1990 Jeep Cherokee with 313,xxx miles. About a month ago it started missing and running really rough so I replaced crank shaft position sensor, iac, tps, map sensor, whole distributor, spark plugs, and spark plug wires. So then that leads me to do a compression test since after I replaced everything it was still missing here's what I got.
Cylinder 1-115psi
Cylinder 2-130psi
Cylinder 3-130psi
Cylinder 4-130psi
Cylinder 5-90psi
Cylinder 6-150psi
Then I read some threads about people having same problem so I pulled the valve cover off and pulled the rockers and Roller Arms none of the Roller arms are bent so what should I look for in a bad Rocker? Or if you have any other suggestions that would be great thanks in advance.
Cylinder 1-115psi
Cylinder 2-130psi
Cylinder 3-130psi
Cylinder 4-130psi
Cylinder 5-90psi
Cylinder 6-150psi
Then I read some threads about people having same problem so I pulled the valve cover off and pulled the rockers and Roller Arms none of the Roller arms are bent so what should I look for in a bad Rocker? Or if you have any other suggestions that would be great thanks in advance.
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Is vacuum line to map in good shape a small crack in it can cause issues like this.
Last edited by freegdr; 07-23-2017 at 03:30 PM.
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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Year: 1991
Model: Cherokee
Engine: 4.0