# 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:** 79

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**Author:** ![GermanPSI](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/germanpsi/32/6353_2.png) [@GermanPSI](https://forums.speedlife.net/u/GermanPSI)\
**Post date:** [June 28, 2011, 2:34pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/79 "2011-06-28T14:34:05Z")

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> [@Who all is moving?](https://forums.speedlife.net/t/who-all-is-moving/43364/91):
>
> Maybe that particular cylinder on the 4g63 is the last to get up to temp due to the oil/cooling system design. Maybe it’s the thick oil. Who knows. The engine compression tests PERFECT when up to OPERATING TEMP, so that’s literally all that matters.

To test this theory why don’t you do a compression test on the motor when it’s 100% cold. Obviously the numbers are going to be lower but if they are all consistant then maybe this cyl is the last to get up to temp. If that cyl is lower the the other 3 when 100% cold then that’s just what it is.

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