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Compression Testing.................Something You Need To Know

Antz81

Well-known member
Joined
Dec 21, 2013
Messages
936
Location
Auckland, New Zealand
Corvette
1981 4 speed
That is really odd. Are you using a CR tester with a rubber cone or threaded end?

Doug is a professional and although I don't know what Antz does from 8 to 5; however he is damn sharp also. I'd listen to what they say.



Thanks kpic.

I was wondering if he was using a rubber cone on his tester also. It's the only logical thing i can think of to explain it.

8 till 5 are horrible hours by the way. I'd spend far too much time in traffic.
 

kpic

Well-known member
Joined
Mar 29, 2014
Messages
2,292
Location
Columbus, NC/NE Georgia
Corvette
1997 boosted silver coupe
Thanks kpic.

I was wondering if he was using a rubber cone on his tester also. It's the only logical thing i can think of to explain it.

8 till 5 are horrible hours by the way. I'd spend far too much time in traffic.

Again. as a design type it either fits or it doesn't fit.

Are we mistakenly applying logic in the wrong situation is the first question. ;)

Hopefully, you are more blessed than either of us. We live in the country in a rural setting. When we worked, we drove 45-50 minutes and the drive was well worth it to live surrounded by nature. I've always managed to drive further to enjoy where I lived than lived closer to avoid the drive.
 

dougelam

Well-known member
Joined
Jul 19, 2011
Messages
453
Location
Michigan
Corvette
2002 Roadster
The whole point of this thread is to inform you of the REAL possibility a compression test with poor results doesn't necessarily indicate a bad valve or seat. If there is any carbon stuck to the valve face or seat the compression test will yield a low reading. In my case my compression tests didn't show normal pressures until about the 10th or 11th test.
AGAIN late to the party

Dude look most of us have been there done that and the ones that didn't probably don't care....

AND a low reading IS NOT AN OPEN VALVE

A stuck open valve would be a no reading!

Sent from my SM-T530NU using Tapatalk
 

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