phDiesel

My car is generating a lot of positive crank case pressure. Under heavy load it has a tendency to push the dipstick up the tube until it can vent off...

Cars throwing a P0441 code right now, any ideas where to start looking. Looks like that code has something so do with the purge canister, but honestly I don't really know how that whole system works.

PatternDayTrader

Might not be able to do much about the crank case pressure. Diagnose the 441 code. Its not impossible they are related but its pretty unlikely.

383vett

Might want to do a leak down test to find the source of the crankcase pressure.

phDiesel

I got a similar response on the Facebook group so I'll be heading that direction next.

Anybody have a good way get to TDC on a LT-4?

PatternDayTrader

Before you get to deep into that activity, lets list the things that can cause unusual crankcase pressure.
1- A screwed up PCV system.
2- Bad piston rings.

phDiesel

Sooooo check the PCV system first.

DMITTZ

I agree with PatternDayTrader's comment.

I hope yours turns out to be just the PVC. My old motor used to do the same thing and it was the rings, which part of the reason I ended up doing a motor rebuild.

PatternDayTrader

Bingo ...

vettespecial

Yes mine at 230 thousand plus miles leaked from every area when i pulled the PVC valve while engine was at idle blew lot of blowby thought only fords did that LOL
pulled mine as well complete overhaul now a 355 CID problem gone no leaks anywhere, and no blowby.