Quote:
Originally Posted by Brian Carlton
The fact that the seat is burned won't cause the smoke. But, the guides may have excessive clearance or the seals are shot. All cause more oil consumption than desired. It's more noticeable when the vehicle is not moving.
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I burned an exhaust valve once, due to an overpressure situation on a gasser. I drove the car for a few hundred miles and then removed the head. The guide for that valve was completely shot. Several hundred inch/1000 of play. Being blown around due to the imperfect seal (to say the least) apparently put pressure on the stem.