nub_pwn

white/light grey smoke comes out of my exahust only when vtec kicks in, i got a 92 hatch with a stock GSR, is it just oil burning or do i have a leak somewhere?

H9Omega

usually white/light grey indicates your coolant/ cooling system. How is your radiator? filled? what ecu are you running?

nub_pwn

im running a p72, i gotta check my radiator.....bump for more info plz

nub_pwn

bump

jas825

Omega is right. It's most lkely coolant. Hopefully its not your head gasket.

toggs

if its coolant its usually really white, it almost sounds like a lean condition...maybe...

what do your spark plugs look like?

nub_pwn

its black

fasthatchb18c1

White smoke is coolant. Black spark plugs means your running rich. Blackish smoke means your running rich.

Is this car stock? Are there any codes?

wrenchmonkey12

yes white smoke means your burning coolent, end of story, black smoke means your running rich, blue smoke means your burning oil.......if i were you i would do a compression check and a cyclender leakage test

BLUE EH3

white all the time is coolant?

nub_pwn

i was runing a po6 before i got my p72 thats the reason for the spark plugs being blacku think if i change em it would make a difference?im still using the same sprak plugs with the p72 , the only code that comes is o2 sensor from exhaust, its straight piping no cat welded headers to exhaust, it really stinks ............when i down shift white smoke comes out and when vtec hits white smoke comes out

nub_pwn

i thought black sprak plugs mean ur running lean, and the GSR motor is all stock

fasthatchb18c1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nub_pwn &raquo;</TD></TR><TR><TD CLASS="quote">i thought black sprak plugs mean ur running lean, and the GSR motor is all stock</TD></TR></TABLE>
No white spark plugs means your running lean. Do a compression check like already said.

Si_chRis

Probably it's because you dont have a cat on it. My car blows out a puff of smoke when vtec hits. But it's a dark grey-black color. I have no codes and only my cyl 4 spark plug is carbon fouled. Have no idea why.

stock_honda_coupe

It sounds like a haed gasket leaking when under pressure. Do a leak down test on it.

gotboosthatch

iTrader: (8)

yea check your headgasket white smoke comes when they are going out..had a dsm I know.haha

BLUE EH3

averyvm

iTrader: (1)

I think itsyour valve seals. let your car sit over night and then drive it you see smoke in the morning while you drive even if your not in vtec then its your valve seals

stock_honda_coupe

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by averyvm &raquo;</TD></TR><TR><TD CLASS="quote">I think itsyour valve seals. let your car sit over night and then drive it you see smoke in the morning while you drive even if your not in vtec then its your valve seals</TD></TR></TABLE>

That would be blue smoke. He has white smoke.

Blue=oil

white=coolant

black=unburned gas

(I you burn a lot of oil the smoke can look white, but its really not.)

nub_pwn

i tihkn it might be oil, cuz only after 4-5 k and let off throttle its looks white but kinda grey?!!?? still confused was thinking it was hte valve seals but when i start it up in the morning no smoke........
i think it might be oil in my spark plug tubes cuz i was changing spark plugs and oil today and i put in a new spark plug then took it out and there was oil on it? still confused

vtec2nv

yea i have a similar prob. only when under load does it smokes white...i compression checked the motor, and all the numbers are even. how would u know if its your valve stem seals? how hard is it to do a leak down test?

stock_honda_coupe

You need the proper tools. there not too much and its not hard to do. Once you get the tool it will be obvious.