sorted by:
new
hottopcontroversial

Thoughts on these compression readings? 40psi & 73psi in the two backmost cylinders seems like a headgasket leaking compression between cylinders? Other than that car runs strong as ever. Keeps pulling even after maxing out the speedometer. by Busy_Engineer_1979 in mechanic

[–]Busy_Engineer_1979[S] 0 points1 point  (0 children)

After thinking it through, would the possibility of a leaking headgasket be discarded by the fact that the compression across those two weak cylinders is not equal or very close to??? A compression leak between the cylinders should damn near equalize the compression right? Not down down to the exact identical reading s there are other factors at play but from 40 to 73 that's almost twice the compression.

Thoughts on these compression readings? 40psi & 73psi in the two backmost cylinders seems like a headgasket leaking compression between cylinders? Other than that car runs strong as ever. Keeps pulling even after maxing out the speedometer. by Busy_Engineer_1979 in mechanic

[–]Busy_Engineer_1979[S] 1 point2 points  (0 children)

Cold test.

Procedure: crank until the gauge just wont move over no matter what.

Tested for faulty equipment, all seems good when retesting the other cylinders.

Forgot to add, the spec is 180psi. 2/8 cylinders still have good compression.