a1320addict

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Friend of mine put on a revhard kit, fmu, and was "tuned" with a vafc. The car seemed to be running decently, he popped the hood the other day, and saw a steady stream of grey smoke coming out of his valve cover breather. The car has been running fine, he's stayed out of boost, but is a little worried. Here's the situation:

I finally got a chance to meet up with him and we proceeded with a compression test.

#1 - 205 #2 - 205 #3 - 205 # - 145
I added some oil in cylinder #4, and the compression didn't increase/decrease at all. According to the Haynes, if it were the ringlands and/or rings, the compression would increase, if there was no increase possible causes were said to be valve seals or headgasket.
The headgasket is fine, and the plugs are burning semi-decently. He hasn't talked to who "tuned" the car, I'm just trying to help him out with some insight. People I've talked to have been very quick to jump to the conclusion that a ringland failure is going on....I just want some other opinions.

Thanks

a1320addict

iTrader: (1)

anyone?

Jay_Sensing

I had similar results from burning one exhaust valve slightly when I hit the limiter on an 80 shot with a B16 a while back.

a1320addict

iTrader: (1)

interesting...any other thoughts?

Hybrid96EK

If the results did not change with oil then I say bent valve(s) or incorrect valve lash.. Leak down will confirm.

a1320addict

iTrader: (1)

so would it be correct to assume nothing to do with the pistons? from the beginning i've been leaning away from that, as there is not a huge amount of fact to back it up.

he's scheduled for a leakdown test tomorrow so..

thanks everyone

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yehiknowrite &raquo;</TD></TR><TR><TD CLASS="quote">so would it be correct to assume nothing to do with the pistons? from the beginning i've been leaning away from that, as there is not a huge amount of fact to back it up.

he's scheduled for a leakdown test tomorrow so..

thanks everyone</TD></TR></TABLE>

My experience and knowledge says its nothing to do with the pistons, rings, or cylinder walls.

99B16Si

Reguardless of the oil test Id say ringlands if hes getting blowby. do a leak down test and try to listen to where the leak is coming from

Honda Sport

I say a burned exhaust valve.

but yeah, do a leakdown and see if you hear anything from the intake, exhaust, or from adjacent cyls.

if you hear anything from the intake or exhaust, you have a burned/bent/damaged valve. if you hear it from an adjacent cyl, you most likely have a damaged headgasket that's leaking to other cyls.

JDM_Risa

iTrader: (1)

ringlands?..... anyone