Re: Stuck Valve

Posted by Owen_Dyneto On 2009/6/21 18:45:39

Pull the valve covers, let the engine idle and check for a stuck valve (one whose stem doesn't come down to the same level of the others). But with 35 psi compression that doesn't improve with oil added I'd say it's less likely that it's stuck than that it's a burned exhaust valve and/or seat, or a bent valve.

Could also be a broken valve spring or lost keeper(s), easy to see when you have the covers off.

Perhaps time for a valve job, not too bad a job as long as the guides are good and there are no cracked seats. You'll probably want to rent a power seat grinder and someone who knows how to use it. I just finished a valve job on a 38 Eight; though the flat rate tables usually say about 6 hours, plan on 2 days not counting waiting for parts, as long as no guides need replacement and no seats are cracked. Would also be a great time to attend to the water distribution tube.