fmostafa006

Hello Everyone!

i am Re-posting this because i have new data.

I have a 2000 Cherokee 39k mils, just replaced the head gasket.
the problem that i am having now was their before i replace the Head Gasket.
when i turn the car on the engine vibrates and the Check Engine Light came on. P0300 p00303, and p0305, but when i changed the head gasket i also replaced the plugs and the ignition coil.
however it still has the problem.

i finally got a chance to do the compression test, Not Good.
cylinder 5=55psi cylinder 3=25psi the rest of the cylinder were at least 120psi

I want to know what are the chances of it being the valves? because when i replaced the head gasket the pistons looked OK as well as the head.




Thanks

90xj,99xj,92mj

put a lil oil in the bad cylinders then do a check, if the psi increases its your rings, if nothing happens its your valves

fmostafa006

how much do you mean by little?

Thanks

90xj,99xj,92mj

if you have an oil can maybe one squirt, or bout half a cap full

fmostafa006

just did that and here is what i got.

Cylender 5 was +7psi
cylender 3 was + 5psi

what dose this mean

90xj,99xj,92mj

most likely your rings man

Turbo X_J

Just wondering what prompted you to replace the head gasket @ 39 k, did the engine lose coolant and cook? You said the pistons looked fine was there deep scoring in the bore?

rich

What are the codes first of all figure those out first.

89stroker

your compressions are wayyyy low. might as well look for a motor out of a total or get a qoute on a stock rebuild. could be rings and the vibrations you stated is the weak cylinders struggling to burn the fuel. its rebuild time man. sorry