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1G What about this Compression Test?

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91Bomb

15+ Year Contributor
908
7
Jul 15, 2003
US, New Jersey
My stock original 22 year old free/cheap modded Tsi is coming up on 200k so I decided to check compression today. Car was fully warmed up after driving it and test was done about 15 minutes later with throttle not open + no oil poured in cylinder for test + all spark plugs removed.

Here's what I got:

1) 162
2) 150
3) 175
4) 175

175's are higher than book says for turbo's (which is 164) so I'm not too sure what to think. Car doesn't use any coolant and very little oil for being close to 200k and pulls strong, runs + idles good etc. (7-bolt 1g)

Is this good or what :idontknow:
 
Last edited:
It looks good they are not too far from each except the 150 and with in service limit. It's probably really high because of all the years of carbon build up. I would re do it and start from opposite cylinder side first to rule out battery drain and see what you get.
 
It has stock original motor.

I just wanted to see if engine was still good so I know if replacing timing belt is worth it, getting new tires etc.
 
Still gotta do the test correctly to get correct results. You won't know for sure, but if you plan on rebuilding or replacing your engine, I would get the timing parts anyway. But from the sound of it you should be ok for awhile.
 
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