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First thing we did was a compression test on the engine. Here's the results:
cyl 1: 125 psi cyl 2: 120 psi cyl 3: 125 psi cyl 4: 115 psi cyl 5: 115 psi cyl 6: 120 psi cyl 7: 115 psi cyl 8: 125 psi I then sprayed some oil in the low psi cylinders and retested with negligible improvement. (So that means it's the rings, not the valves - more on this later). Since there was more than 10% variation between the highest and lowest pressures, it was time for a freshening. I unplugged everything rather uneventfully in a day and got it out of the engine bay with the help of the wife and the kids. ![]() ![]() |
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