Just did a compression test... 165, 171, 185, 175 on cylinders 1-4. Its a D16Y8 with 146000 miles on it. Just want to know if this is good.

 

For a really healthy motor they should all be within 5-10 psi of each other. 3 out of 4 cylinders sound nice, but the one with 165 is losing a little compression. It'll be fine if that's what you're asking, just little less performance.

 

well whats the "norm" for a D16Y8 motor? BTW this is the stock motor, it hasnt been swapped or anything.

 

anybody?

 

different compression testers will give off different numbers. as long as the numbers are within a few psi of each other you shouldnt worry.

also, did you do the test with the engine warm and throttle wide open?

 

yes, the engine was hot and WOT