Did you check with the engine hot? I've found that for accurate compression
check, I need to bring the engine up to running temp, shut down, and check
asap. Weare gloves to protect against burns. Also, how much do you trust
your gauge? At a recent AHCA tech session, I found that one gauge was
consistent, the other gave occassional oddball readings in comparison. The
inconsistency is what led me to chuck it.
Jeff
At 9:42 AM -0400 5/4/99, Michael Graziano wrote:
> So last night I had two options for things to do. 1. Do my laundry as I
> had no more work clothes, or 2. Check my compression for no apparent reason.
>
> Of course I check the compression. And now the results.
>
> Cyl 1: 130
> Cyl 2: 130
> Cyl 3: 110
> Cyl 4: 130
>
> So now I'm concerned about #3. About 500 miles ago, they were all around
> 125 to 130. Now the 125 ones are @ 130 and a 130 cyl is at 110. I put in
> 5cc's of 20W50 and redid the test on #3 with no change. 5 more cc's (10
> total) and the PSI jumped to 125 from 110. During that 500 miles, I've
> changed from SAE 40 to 20W50. Could that have contribute towards the
> difference?
>
> Could I have botched the valve adjustment, or is this simply a sign of worn
> rings? If the latter, is there anything I could do (other than not drive
> the car) that will prolong the problem. Probably not.....
>
> Michael
>
> '78 Midget 1500 (Who performed quite well on the 150 mile trip to Britfest)
>
> PS: I wound up doing the laundry too..... Not as much fun, that's for
> sure.
> _____________________________________
>
Jeffrey H. Boatright, PhD
Senior Editor, Molecular Vision
http://www.molvis.org/molvis
Mailto:jboatri@emory.edu
404-778-4113
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