Bleakened

What should the compression numbers be for a stock, rebuilt Y7? I'm going to test one here shortly and need to know the numbers for it.

Every time I search, I find threads about people asking if their numbers are good but nobody says what they SHOULD be!

pityocamptes

What they should be on a new car vs what you currently have with XXXXX miles is different. What people are looking for are percentage differences between each cylinder... too big and it indicates a "problem" cylinder... so yes post your numbers. Take all the plugs out and do the compression check at WOT (Wide Open Throttle) while cranking...

B_Swapped93

my 99 DX with 359,xxxKM's pushed 180,180.182,185. you're looking for drops between cyl's more then how high/low numbers. Low overall just means the engine's old and tired.