Quote:
Originally Posted by GregMN
If the valve is only sticking, then address that problem. I had the same problem on a 606. Occasional loss of power with smoke, then fine for awhile. A few minutes of MMO therapy and it is starting and running better then it has in a long time.
My thinking on bent valve is, that it would not be an intermittent problem, but a constant one.
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My intermittent seems to be different than your intermittent. Mine comes and stays for a few days and then goes away for a few days and then comes back for a few, etc. where yours seemed to be for a minutes at a certain speed and then fine. So perhaps it could be bent as it lasts for a while when the problem is present.
When I have time the next thing I will do is pull the valve cover while running and see if I can see anything funny with the valves on the rear cylinder. Perhaps I am barking up the wrong tree to begin with. Then if I can verify that is the issue I'll get an estimate on the job and go from there.
It seems most of you are against swapping heads.