Hi guys!

My engine is blowing a thick cloud of smoke at idle after a XE 233/239 cam install. Before the cam change there was no blue smoke at all, car has 46k miles.

Why is my engine burning oil at idle?

I have unplugged the PCV tube from the TB, but it's still smoking.
I haven't replaced the valve seals when changing the springs, I thought it will be fine with stock 46k seals. Does the increased valve lift immediately destroy the stock seals?

What could it be , please help!

TIA,

 

It is most likely the seals. I had the same problem, checked compression and it was good, so replaced the seals and smoke stoped.

 

sssalah, thanks for your reply!
What type/brand valve seals are you recommending?

 

I just used GM seals when I did my spring install. They worked perfect.

 

Thanks Ion!

 

yep definetly the seals. Viton valve stem seals are pretty much the new standard in seals. I highly recommend.

 

I'll throw my 2 cents in as well and say seals.

Just use the factory positive replacement ones.

 

Another vote for GM replacement seals...Thanks for your input!

 

can these be changedd out without pulling the heads?

 

Definiately, just have to pull the springs.