|
Re: cracked exhasust valve
It is doubtful that Pontiac will cover the repair. However, I would notify the NTSB about the problem as this could lead to a recall of the engine components at which time the repair becomes covered. As far as an exhaust valve cracking it just doesn't happen. Probably a manufacturing defect. Usually they will burn or bend if they hit a piston but not fracture like you said.
If I were you I would find a reman head or get one from a wrecking yard. If one valve fractured you may have gotten a bad set and may run the risk of having it happen again. It may also be much less expensive since the valve seat may need replaced as well as the valve.
|