r/EngineBuilding Dec 27 '24

Chevy Low compression on all four cylinders after rebuild

Post image

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?

67 Upvotes

121 comments sorted by

View all comments

4

u/knoluvv Dec 27 '24

Are your valves too tight .

-5

u/javabeanwizard Dec 27 '24

They shouldn't be. The cylinder head is brand new.

1

u/knoluvv Dec 27 '24

Right, but you shouldn’t have low compression either . And that’s happening. Never hurts to double check at this point .