My Jeep is a 93 YJ with the 4.0 6 cylinder multiport fuel injected.
It has been lacking power.
I just checked the compression and #1 was dead.
1 - 0 psi dry/wet
2 - 130 psi dry
3 - 115 psi dry
4 - 130 psi dry
5 - 135 psi dry
6 - 130 psi dry
I am not losing coolant, my oil does not have water in it.
I think it is either a stuck or burned out valve.
I could see the valves moving, but not how they were seated in #1.
I am going to try a really good fuel additive and see what happens, but I think I am going to need to replace the valves, I will probably do the entire head.
It has been lacking power.
I just checked the compression and #1 was dead.
1 - 0 psi dry/wet
2 - 130 psi dry
3 - 115 psi dry
4 - 130 psi dry
5 - 135 psi dry
6 - 130 psi dry
I am not losing coolant, my oil does not have water in it.
I think it is either a stuck or burned out valve.
I could see the valves moving, but not how they were seated in #1.
I am going to try a really good fuel additive and see what happens, but I think I am going to need to replace the valves, I will probably do the entire head.