Re: Valve train noise 1932 901

Posted by Marty or Marston On 2018/2/22 11:34:55
It was an exhaust valve. The noise was intermittent with it happening about 75% of the time (4 or 5 seconds with noise and 1 or 2 seconds without). When there was noise the engine had a major miss and when it was quite it ran smooth.

I'm' guessing that when it was noiseless the valve spring closed the valve and when it didn't the partially closed valve was being hit by the tappet which caused the noise. By chance, when I shut it down was one of the times the valve close. I must also add that after it was shut down and before I removed the head and distributor, I manually turned the engine over to get the distributor rotor pointed forward (a habit that I've developed over the years whenever removing a distributor.

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