2G 4G64 Cylinder Compression

[Clawless]

Hi all!

I was able to run a compression test today on my 119k 4G64. The values were higher than the service manual so I'm wondering if there is a problem. I attempted to do the test on each cylinder 3 times to verify the gauge wasn't faulty. The values were:

Cylinder 1: 240psi
Cylinder 2: 230psi
Cylinder 3: 245psi
Cylinder 4: 230psi

 

[sierra5]

Does sound pretty high. Normally they should be around the 160-170 psi range. Is it stock or built? Probably have detonation or some issue like that

 

[Clawless]

Does sound pretty high. Normally they should be around the 160-170 psi range. Is it stock or built? Probably have detonation or some issue like that

I think it’s my gauge, car runs normal, no detonation.

 

[sierra5]

Maybe borrow another gauge. If it's 2 gauges saying the same thing then idk