22RE compression test: 1 cylinder at 125 PSI (1 Viewer)

[atx4Runner]

Hi folks,

Just purchased a new-to-me 86 22RE engine in a 4runner and got a compression test done.

Results:
1, 3, 4 - 150 PSI
2 - 125 PSI

The test was done with a very cold engine (been sitting for 2 days).

The mechanic shop didn't think it wasn't a concern for an engine that age and, at operating temperature, would likely seal up even better.

Thoughts?

PS - I'm about to drive this 3600 miles cross-country and operate it on the very remote Nevada desert floor for a month.

 

[pappy]

Ya, do the test with a warm engine. I've never heard of doing the test cold.

Other than that .. drive it and see how it does. If it runs fine, keep going.

 

[gbogh]

I'd want a dry & wet compression test, & a leak-down test to get a better picture of what that low compression is from.

 

[SteveH]

If it were 90, I'd worry more. I would check the valve adjustment, and re-test hot. I bought an '89 4Runner and one valve was being held partly open (zero lash - valves were far out of adjustment) and when adjusted, the compression came back.