Also running a vented catchcan to reduce crankcase pressure will help. 
01 WS6 STS blowing off oil cap
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01 WS6 STS blowing off oil cap 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?
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.
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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.
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.
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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?
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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
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
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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.
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.
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.
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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.
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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
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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.
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.
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.
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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?
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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.
Also I see there is no conneciton to valve cover on Passenger side. What up with that.
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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.
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.
