Shelby7

i have a 2004 gto with a ls2 block built to a 402. it has an oil breather on it and is smoking after i run the car down the road.
what in the world is causing this.

Thanks, Shelby

WS.SIX

iTrader: (3)

is it actually smoke or is it just steam/oil mist?

Shelby7

steam/ mist

WS.SIX

iTrader: (3)

normal to see with breathers. as long as they are not sopping wet with oil i wouldn't worry about it. they are bleeding off excess crankcase pressure and with that some oil mist comes out.

Shelby7

i touched it earlier and got oil on my fingers. just a fine film but still oil

WS.SIX

iTrader: (3)

how many miles on the build?

Shelby7

800 miles

WS.SIX

iTrader: (3)

any blue smoke out of the exhaust? if you hold your hand over the engine oil cap while the engine is at idle is there an abundance of air coming out of the filler neck? if not just keep it wiped clean so it doesn't get everywhere. oooooor get a vacuum pump.

Shelby7

ill check it tomorrow, its boosted, would that matter?

Shelby7

No blue smoke

WS.SIX

iTrader: (3)

ah you didn't say it was boosted. yeah you're going to have that issue running just breathers. if it really bothers you a vacuum pump would solve it and you would gain some hp as well due to better ring seal.

Tally TransAm

iTrader: (17)

steam out of the breather is normal once the motor is up to temp

Shelby7

Won't hurt anything then out of a boosted car then?

KILLERARMY

I was having the same issue and was told to put a wrist band over the breather which will soak up the oil/mist. I see a lot of Pro/Mod car with some type of wrist band or fix up towel over the breather.

WS.SIX

iTrader: (3)

Will just get your engine bay dirty

Shelby7

Do not want that

WS.SIX

iTrader: (3)

You can go the (IMO) unsightly route of putting something to absorb the oil around the breather or a vac. pump. A good pump setup is around 800-900 range.

Tally TransAm

iTrader: (17)

this is my breather location



the breather steams constantly when the the motor is up to temp. water vapor is a byproduct of heat in the crankcase. as you can see my engine bay is satin white and no oil mist gets anywhere in the engine bay. steam is normal. oil mist, oil smoke, **** coming out of the breather other than steam, is not

flattusmaximus78

iTrader: (1)

^^^ He is right. If you had your hood off and did some wot pulls you would get some oil out of it, but that is normal as well. Not a lot, but def some. You sound like you're in good shape.

Shelby7

Alright, thanks guys. I've never had on of these before so was a little worried.