hatrickstu

iTrader: (1)

is this normal looking????

stage 2 pulley
42's

60,000 miles

SSdan

Looks only like oil....

Drakonen2000

you sir had no catch can! lol...tis normal...gross, but normal....clean it up!

hatrickstu

iTrader: (1)

k cool

Blown 4-banger

Yep. PCV vents into the intake, which brings with it oil and other ****.

Psykostevo

Yep looks normal for those that keep the valve breather blowing into the intake.

umrdyldo

iTrader: (1)

Yeah the cheap catch can for 20 bucks is an amazing mod

Witt

Only when making more power than stock.

PCV is actually supposed to draw from the intake and cycle through to the intake manifold. Its setup so when you have excessive blowby, like nuked rings, it vents to the intake.

Area47

mine is blue

smurf explosion

eastcoastz

I thought our PCV was in the intake manifold? The hole inbetween runner 2 and 3.

ralliartist

same here!

Witt

It is.

Theres a PCV vent tube from the back of the cam cover to the intake pipe. Air is drawn from the intake manifold through that hole you mentioned and replaced with air through the vent tube in the intake pipe.

When there is an engine problem or in our cases, more blowby than stock levels air will revert from being drawn through the vent tube to being forced backwards into the intake pipe. It causes the situation shown in the OP.

eastcoastz

Ok thanks Witt! Is that tube suposed to be serviced at all?

hatrickstu

iTrader: (1)

witt so its normal?

Witt

I really haven't looked too far into it but I don't think so, there isn't a valve or filter as far as I know.
I've seen it in every car pushing more horsepower than stock. The hole in the intake manifold is metered for a specific amount of airflow. If it were enlarged it would properly eliminate the reversion of the PCV vent tube, but its not something I have got into.

hatrickstu

iTrader: (1)

cool man thanks

eastcoastz

The reason i ask is for months now my car has been running lean via high LTFT always double digets positive so I figured that hole might be screwed up. I was running a **** loan of meth\boost juice and maybe plugged it up or something?

Witt

Hmm, its a metered leak but even if it were shot, it would be still drawing air from the intake pipe via the pcv vent tube unless you popped a dipstick and left it unsealed to where the PCV could draw from the open dipstick tube instead of that vent tube.

Maybe a vacuum leak or too large of an aftermarket intake pipe?

eastcoastz

Stock intake and I can't seem to find an induction leak before or after the leak.

Witt

Thats really strange. I know the stage 2 GM tunes like to be in the double digit lean areas in the lower MAF cells but I've never seen one throw a lean trim code without a larger intake pipe or vacuum leak.

eastcoastz

Yea the cars f@#ed up man! If I keep it in gear and take my foot off the gas the rpms have a sudden quick drop and at that time the engine jolts like theres an excessive drag on the engine.

Saltbager

That sounds like a vacuum leak to me .....

eastcoastz

Yea maybe I just can't find anything. One guy I work with said it feels like a bad IAC which could be because I used a **** load of carb clean to clean the throttle body.

Witt

Its an electronic throttle, there is no IAC. Idle air control is handled through the software via the electronic throttle.