My buddys cobalt is boosting at all, when it goes to hit boost there is just a loud screech. We replaced the intake manifold gasket and supercharger gasket and its still doing the same thing. It is also smoking from inside to motor ( oil coming from dip stick tube and oil cap when you pull it after shutting off car. Also, the cars oil is milky and the crankcase ventilation hose had the oil/ radiator fluid in it which also got into the tb and supercharger, even though i cleaned most of it out. Does anyone have any ideas as to what the issue is with this thing.

 

....head gasket? milky oil is usually coked oil isnt it? but isnt that mostly a turbo issue? unless oil just isnt flowing or is flowing really poorly....

someone with some more knowledge chime in?

 

Milky oil has water in it. You have a blown gasket.

 

I also was thinking head gasket, thats what I suggested to my buddy, but he didnt think so. Would the head gasket keep the supercharger from spooling

 

Its the head gasket.

 

superchargers dont spool. The supercharger is definitely still spinning, but honestly, if your headgasket is blown, not boosting enough is the least of your worries

 

Well I guess this is bad news for him. I figured it was worse than he thought because oil was 2 quarts low, he just changed it like 3 weeks ago, and when I pulled the intake tube that runs from the top of the wheel well to the tb there was all goo in there, so Im definately thinking hes going to have to get it into a real mechanic and soon. Only thing going towards his favor is it really hasnt been driven much since this started, like less than a mile or so. Thanks for the input guys.