Compression test result

[ahwest]

Hi all,

I finally did a compression test due to my situation here
http://www.audizine.com/forum/showthread.php?t=198299

the result came out pretty good i think.

1st time, they are 195, 190, 195, 193, 192, 190
2nd time, they are 197, 192, 200, 193, 193, 190

so i think my head gasket is in good shape as well as the valve stem seals?
however I talked to the auto part store guy, he said that even with a good compression test result it doesn't mean the valve stem seals are still in good shape. now im confused... i guess i will have a shop to do a leak down test?

[BurnAll4S4]

your numbers seem good. def. get a leakdown test done and see how that is.

[S4 in_lowplaces]

those are solid numbers man. nice

[GURUMAN]

These are like new numbers bro.

[mholme]

your numbers seem good. def. get a leakdown test done and see how that is.

Yup, need to do the leak down test now

[1997gtx]

What? Does that motor have like 5 miles on it?
--Adam

[ahwest]

1997gtx, now i feel like i wasn't doing the compression test correctly???

[generationjdm]

Those numbers sound awfully high to me. I would check to ensure your cams aren't off a few teeth.

r u serious?

[mholme]

Those numbers sound awfully high to me. I would check to ensure your cams aren't off a few teeth.

I got those readings on my last compression test across all 6 cylinders..around 190..I'm pretty sure those are good numbers he's seeing..

[ahwest]

if my cams are off a few teeth, i think i would already got a CEL code?

[BurnAll4S4]

if my cams are off a few teeth, i think i would already got a CEL code?

nah you wouldnt have a running engine if they were off a 'few teeth'.

[S4 in_lowplaces]

^^ya,

You would have bent valves, and damaged piston's. Your fine.

[BurnAll4S4]

i dunno about the pistons part ;)

[///M3 TO S4]

Those numbers sound awfully high to me. I would check to ensure your cams aren't off a few teeth.

wow....this is the dumbest statement i have ever seen on this forum.....congrats
you need a medal

[S4 in_lowplaces]

i dunno about the pistons part ;)

I saw the wink at the end but im not sure if your being sarcastic or not, Even if you are i will correct you.


Yes you can damage a piston if your off a few teeth. If the valve is coming down at the same time as the piston going up then you will have a bent valve and dameged piston crown. I'm pretty sure you knew that but didnt want to get the OP confused. Heres a pic of a damaged piston from the valve coming down on it.