What do you think???

[Sleaper]

So yesterday I went to Allen's shop to get some 60# injectors installed and a re-tune. On the drive over (about 165 miles), I had no issues and everything worked fine. After getting the injectors installed and going to the exhaust shop to have the cats gutted (whole 'nother story), it started blowing oil out of the filler cap. We then bypassed the STS venting system and vented to the atmosphere, similar to what is done on the Trick set ups and it still blew oil out. No smoke out of the tailpipe and tailpipe is dry. Removed the turbo and drove N/A, still blew out a little but not as much. My shop is investigating today and I should know something this afternoon but wanted to see what everybody's thoughts were.

And I want to thank Allen and his crew for staying late to help me get back on the road.

[txarkitekt]

Hmmm...you gave us some stupid reasons for the poll Jay...

Ok--so when you say you bypassed the STS venting system--you are talking about the BOV setup where it goes back into the intake, right? So, the only advantage is releasing the the off-boost into the atmosphere--but that should have no effect on the oil pressure, right? I know the STS kit needs an oil tap from the motor...somehow that is the issue??? I don't think the motor has enough uuumph to blow the oil filler cap off unless it is blowing itself up.

And when you say "blew oil out," are you talking about it dripping out of the cap? Or the neck at the valve cover? Or did it blow it the eff off? We needy more info son.

Is the oil filler cap locking into place? Those things are so fu--(whoops, we almost had an infraction here)... Those things are so stinkin weird that the cap could be stripped out or something.

But still, we need more info!

[Sleaper]

Hmmm...you gave us some stupid reasons for the poll Jay...

Ok--so when you say you bypassed the STS venting system--you are talking about the BOV setup where it goes back into the intake, right? So, the only advantage is releasing the the off-boost into the atmosphere--but that should have no effect on the oil pressure, right? I know the STS kit needs an oil tap from the motor...somehow that is the issue??? I don't think the motor has enough uuumph to blow the oil filler cap off unless it is blowing itself up.

And when you say "blew oil out," are you talking about it dripping out of the cap? Or the neck at the valve cover? Or did it blow it the eff off? We needy more info son.

Is the oil filler cap locking into place? Those things are so fu--(whoops, we almost had an infraction here)... Those things are so stinkin weird that the cap could be stripped out or something.

But still, we need more info!

They bypassed the PCV system that STS uses and used a hose off of the passenger side valve cover to direct vent it to the atmosphere. (Allen may have to chime in ehre to be more specific). The oil was coming from the oil filler cap as if the little rubber gasket wasn't there or it was tightened, but all of those were checked and ok. Once the STS PCV system was bypassed, the oil started coming out of the hose that was vented from the valve cover. Let me know what other info you need and I'll try and explain...

[txarkitekt]

Hmmmm... Ok, I get it--they used the PCV stuff.

Weeeeeeell, I couldn't tell ya! I would say to try and replace the oil filler neck from the pass valve cover and see if that works. Its a cheap fix.

Let us know what you find out.

[ducky]

When it came out the filler cap were you under full boost or close to it?

Mine sprays out sometimes under full boost around the cap and valve cover, like the oil cap doesnt seal all the way

[AKlowriderZ71]

It sounds like a compression test is in order......

No sense in chasing your tail if you damaged a piston.

[zeake]

You might need a vent and filter with boost. Meaning boost is causing the oil to blow out the pcv system.

[SCIV]

Pull the #7 plug and take a looksy in there.

[GMCwantsLS1]

Pull the #7 plug and take a looksy in there.

Si!

[bud8fan]

double si!!!