# Informative compression test info from my own car.

**URL:** <https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128>\
**Category:** Shift518 Automotive\
**Created:** [June 27, 2011, 4:50pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128 "2011-06-27T16:50:00Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)\
**Post date:** [June 27, 2011, 6:14pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/31 "2011-06-27T18:14:13Z")

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> [@Nice looking truck on Craigslist](https://forums.speedlife.net/t/nice-looking-truck-on-craigslist/43379/8):
>
> Why do you disagree Travis. Please do explain as I believe John stands correct here. SRS. every time I have done and seen it done was not at all normal operating temps. If it’s to help you sleep at night then so be it. Again not trying to be a dick just interested.

In general, any kind of operational checkout on a piece of equipment is done with the piece being tested at as close to operating conditions as possible. Specifically, in this case, an internal combustion engine does not ‘seal’ up (PTWC, etc) until it’s at full operating temp, and that is when any kind of check should be completed.

I do agree with the lumberjack that something is slightly different with that cylinder when it’s not up to full temp (keep it mind it’s read from 10-15psi lower than the others, not 50 or anything), but I’m not concerned at all. I’ll continue to beat the shit out of the car and check the compression every plug change and update the thread if anything changes.

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