vipvegas

iTrader: (13)

Vehicle hasnt been driven for about a month, and decided to put a new clutch in last week. Upon testing clutch within one mile oil cap pops up and throws oil all over engine. Made sure cap was on tight same thing pops up just enough to leak. DOesnt come all the way off but about a 1/4 inch. WHeere would you start looking I know the STS kit has a 2psi switch could that be an issue?

conan

iTrader: (5)

My first trip to the dyno i pushed the seal out of the timing due to crank case pressure. I changed my pcv valve and bought a little air filter and vented the pass side rocker cover to the atmosphere. This was with a pro charger so the issue with the sts i dont know.

Zombie

iTrader: (2)

zip tie the oil cap down.

Schantin

iTrader: (6)

Also running a vented catchcan to reduce crankcase pressure will help.

vipvegas

iTrader: (13)

What sup Jeremy. Hows it going? Car sat for a month was in England for training. At times still runs a little rich under WOT like 10.8. Think someday at your convenience we could take a peek at the tune? Also will try the zip ties just thought it was strang it started out of nowhere.

Zombie

iTrader: (2)

It's spraying past the oil cap because you are getting pressure into your crank case. I had the same issue on my stock engine. 10.8 a/f is fine, don't mess with it. It will lean out once it gets cooler.

vipvegas

iTrader: (13)

sounds good. Zip tied down and walla. no problems. I just need to narrow down while vehicle falls flat on face when hitting WOT almost like you turned the key off then turned key back on. Strange?

ZDOG

iTrader: (13)

make sure your not getting boost in your crankcase. i pushed the dipstick out twice and came to find a unhappy number 7 piston missing half its skirt!! check the basics......
checkvalve right direction and working on the pcv, and it doesnt hurt to do a leakdown test every now and then. first time sucks but after that you can do it in less then an hour.

good luck

vipvegas

iTrader: (13)

vehicle ran perfect before storing for one month. Just ziptied the oil dipstick and now it shot the PCV valve out of the hose. Only thing I could think of is STS 2 psi switch? Any other ideas. Vehicle run good and idles well but anytime I get into boost throws oil out somewhere and runs rough because of the vacuum leak.

koolaid_kid

iTrader: (21)

I suggest that you need to relieve the crankcase pressure, either by venting to the atmosphere, or by installing a catch can.
After my STS install, I noticed the pressure, and now I vent into a catch can.
Just zip tying things down will only find the next weakest point for the crankcase to vent.

vipvegas

iTrader: (13)

Can anyone throw up a link where it shows the PCV modifications I need to make? I know there are plenty by searching just want to find someone with an STS that went a different route and knows it works.

vipvegas

iTrader: (13)

Also wondering what would have changed in the system to start getting alot of crankcase pressure?

Schantin

iTrader: (6)

Failure of the STS PCV pressure cutoff switch is common. Probably took a dump from lack of use.

Seriously, if there have been no other issues, this is the most likely culprit. Adding a vented catch can before the PCV valve will prevent "boosting" the crankcase and should solve your problem. Lot of thrrds on how to do this

Pro Stock John

iTrader: (34)

Vented catch can or just breathers. You make 2-4 times the crankcase pressure of stock depending on your hp level.

vipvegas

iTrader: (13)

anyone have pics of the pcv setup on there sts vehicle. I want to get this crankcase pressure issue resolved immediatley. Got to be STS 1 psi switch gone bad. Seems thats the only thing it could be or that has changed.

Frost

iTrader: (45)

that thing is stupid anyway, it effectively ENDS PCV when boost comes up. This is not the correct way to do things.

The *correct* way to run the PCV is to draw a vacuum (mount a fitting between the filter and the turbo's inlet in the pipe) from the rear (where vacuum will increase under boost) and run it to a catch can. Then run the inlet side of the catch can so it draws from the valve covers.

vipvegas

iTrader: (13)

So top fitting on catch can to vacuum source? Then both side fittings on the can to both valve covers? WHat do I do with the existing pcv valve and hose. And the TB fitting?

vipvegas

iTrader: (13)

So will John D. 's example work? Can i get the stuff and plan on this working with the sts. Check out the pic.

Also I see there is no conneciton to valve cover on Passenger side. What up with that.

vipvegas

iTrader: (13)

Or is this a better setup for the STS?

Theres so much debate and different setups Ive looked at the numerous threads on this. I would die if someone who has done this can send photos or verify one of theses diagrams will work.

TurboZ28408

iTrader: (18)

remove the stock PCV system . might wanna check to see if you blew out the piston ring landings