stuck valve

[Guest]

Dose anyone know how to unstick a valve without removing the head of the V12?

[Rolf]

Hi Scott, if you are certain that it is really a stuck valve, which is exceedingly rare, you can access the valves to a degree by pulling the intake manifold, you can use that gasket over again, and you can diddle the offending valve enough to un-stick it. I assume it does not have any compression on one cylinder?? Can be a burned valve, broken piston or valve, or a broken valve spring, all which would require pulling the head, good luck, let us know how it resolves itself.

[Guest]

Thank you Rolf .My engine sat for meny years and I,m hopeing that it is just stuck.

[Rolf]

Hey Scott, if that is the case, maybe if you just let it run for a while, thr heat of running, and the oil sloshing around will do the job for you, shouldn't hurt anything, and it would be a lot easier, and may well do the trick, again, good luck.

[Guest]

OK guy's I had one of those when I diassembled my Z 12 I found that the lifter stuck the valve open. The hydraulic lifter plunger was out of the body and was cocked side way's on top of the lifter.<BR>Probably a 'FLUKE' on mine, but maybe some mystery oil squirted in that cylinder may loosen that valve.<P>BILL UHOUSE