I'm thinking in replacing the valve seals on my car, and I would like to hear some sugestions before I start.

The problem that I have is that my car starts to smoke when is idleing for about 5 minutes, it does not smoke when is running nor when I start it. I hope changing the seals will fix that problem.

Any sugestions will be greatelly apreciated, thanks.

85 Transam
LB9 305
cam= 204-214 dur @ .050 in & 110 lobe angle

 

Run compression and leakdown tests before you change the seals. What use is changing good ones when the problem is actually your rings?

I had the same problem. Everyone says about two different things on this board when something goes wrong, "your cat is clogged!" and "your valve seals are bad!" While these are sometimes correct, it isn't nearly as often as said.

 

Usually valve seals are bad if it smokes when you start it.

:hail:IROC-Z

 

Yes, and unfortunately, your symptoms sound more typical of ring problems and blowby. The recommended compression test or cylinder leakage test (preferred) should shed some light on the source of the oil.

Do you have an engine hoist and stand?