Re: KPack's 1954 Panama

Posted by Packard Don On 2020/9/18 11:28:19

It's typically caused by carbon build-up on the stem which can happen, as Howard said, with bad petrol but possibly also if running far too rich. I was one of those he mentioned and in my case the build up was so great and on so many valves both in the up and in the down position that the cam couldn't even turn.

The other more serious possibility is that some of the sand from the interior sand blasting has worked its way into it.