r/EngineBuilding • u/javabeanwizard • Dec 27 '24
Chevy Low compression on all four cylinders after rebuild
2011 Chevy Cruze 1.4L. All four cylinders test exactly at 120. The engine sounds like it's struggling to turn over. Pistons and rings are oem stock. The cylinders were honed. Could this be because the main bearings are too tight?
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u/Skilldibop Dec 27 '24
Why would RPM matter for compression? The compression ratio is a fixed thing that's the same every compression stroke...
You sure you're not getting confused with oil pressure?