Quote Originally Posted by SlowPro48 View Post
PCV? Fahgettaboutit. It's just held in by friction. Can't see it retaining enough pressure to hiss. Besides, if you've got that much blowby you would see the smoke billowing on startup before the cats heat up and hide the oil burning.

It would have to be a heck of a vacuum leak for you to hear it over the engine noise.


So my money's on LittleBeast and the exhaust leak idea. Let us know what it was!
I'll tell you why I posted my PCV theory.

The same thing happened to me, 2 weeks ago...

Due to my travels to & from bieng relatively short distances, my pcv system (not stock) was collecting condensation during my drive, then freezing when I got to work. Same thing happened on the way home, day after day.

Finally, all the accumulated condensation froze the catch can, & some of the lines, solid...no where for crank case pressure to go, just like a clogged pcv valve.

When I got to work one morning, I smelled burning oil & popped the hood to investigate. After seeing the exhaust manifold below the dipstick smoking, I realized where the oil was coming from. At that point, I pulled the hollow elbow that I built to replace the pcv valve. (same friction fit, same grommet)

I couldn't believe the amount of pressure that escaped when I removed it, it was like a geyser of crankcase vapor...& loud.(hissing, for 3-4 seconds)

I woulda never believed it, had I not seen it with my own two eyes...