Results from my compression test, does this mean the white smoke is the turbo?

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filluptieu
Posts: 40
Joined: Mon Sep 28, 2009 6:23 am

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I warmed up the car but its pretty cold outside and took about 15 - 20 mins to take everything apart and begin the test so im sure its cooled down a bit. Its a redtop sr20 stock everything minues exhaust

#1 119#2 119#3 120#4 121

Is that okay? I think that means the Headgasket and rings should be fine right? i thought it was a bit low but its stable. and i let it sit and the pressure held. ALSO this was six cranks exactly for each cylinder test.

I have white smoke coming from the exhaust ONLY when i come back from a drive and it sits for about 30 seconds. Weirdly enough it stops smoking after about a min of smoking and starts back up but stops when i drive..

Anyone with some helpful ideas? Its also a rebuilt turbo but you never know


shift_SRDETuser
Posts: 398
Joined: Fri May 23, 2008 7:14 pm
Car: 1996 Nissan 240SX SE

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white smoke is coolant. It should not do it after the car is warmed up. You may see white smoke however when the cars is idling up to normal operating temperature but it too should go away after a few minutes. It sounds like an intermittent problem if you have to add coolant or it lowers then you have a leak or it could be turbo seals.

the compression numbers I like are spec'd from 117-140 so if you are in that range you are normal. Is it burning oil or something?


filluptieu
Posts: 40
Joined: Mon Sep 28, 2009 6:23 am

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im not sure if it is oil, but it looks white- greyish. and yes it does it after its warmed up and when its cool, the engine of course. If i take a video would that help some?

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MR.chris
Posts: 162
Joined: Fri Jun 19, 2009 2:49 pm
Car: 1995 Nissan 240sx se SR20DET Money Pit
Location: Santa Fe NM

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I thought that your compression was supposed to be at 128 to 150 psi. You could have a bad motor. Anyway check your ECU for codes that might help you out.


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