Hey guys. First of all I'd like to say happy holidays! Hope everyone got to spend time with family. I was blessed enough to make it home to Illinois even though I'm stationed in Texas. Anyways on to the question at hand... I finally made it home to drive my car for the first time in months. Took it for a quick spin around the block and everything seemed normal. Pulled out onto the back roads and opened it up a bit and still smooth as silk (small puff of black smoke but to be expected after sitting for 6 months) turn around and start to head home and jump on it a little bit again. Afterwards I do a pretty hard downshift into 2nd and notice a good cloud of bluish white smoke coming out of the back. Quickly pull over and investigate. When I pop the hood I find the dipstick popped up about 2 inches or so and oil had sprayed all over the passenger side header which is where it was smoking from. Found it odd as this has never happened before. Try to wipe up what I can and put dipstick back in after checking oil level. On the way back home I try a few hard downshift again to see if the problem re-occurs and sure enough it does. Pull over again and put dipstick back in again and baby it home the rest of the way. After further investigation I see that the last time the car was worked on (dad dropped it off at the shop who built it while I was gone for a few other odd and end things that needed to be taken care off) the guy who worked on it ran a t-fitting from the passenger side valve cover to the hose running from the catch can and the valley cover. Car was not like this before and this is the only thing that's changed since I drove it last. Wondering if this current pcv setup has something to do with popping the dipstick? From what I understand the valve cover vent should be ran to a fresh air source? Any insight would be appreciated. Attached a few pictures to help

 

 

 

too much crankcase pressure,the routing on the catch can doesn't look right to me (from the pic's) or bad rings ?????

 

I'm almost positive it's the catch can routing. Doesn't seem right to me but just wanted to see what others had to say and see how theirs was routed

 

This how I did mine !!!! (no issues)

 

Brother,, Thanks for serving and WELCOME HOME!!

Pull the hoses off the catch can (engine running) and see if you have good strong vacuum on the hose that connects to the intake manifold nipple.

Reconnect that hose to the CATCH CAN INLET. Once its connected, see if you have vacuum on the other catch can opening.

You have a ZO6 so the hose out of the catch can needs to go to the fitting on the valve valley cover:





Once you establish that you have vacuum and it able to pull out of that valve valley nipple, OPEN up the oil fill cap and see if you have a very slight vacuum on the opening. Put a piece of paper over the fill opening and see what the air/vacuum does. It should have more suction than puff out.

Try that for starters.

Bill

 

Oh,,, also, make SURE that the PCV valve is installed in the correct direction!

 

Thank you sir! Feels good to be home that's for sure. I'll try your suggestion tomorrow and see what the results are. Thanks for the detailed write-up!