you are asking a question that needs a visual analysis , as you said you ground the carbon of the valves. well how do we know what you have done. you could have damaged the valve seat. carbon is either soaked off or can use a wire wheel. no grinders allowed! also is the valve lash set? if the valves are at zero lash for example they might be just not quite seating. you can read the valve seats to see if the problem lies there or not. there is lots a person can see with the eye instead of guessing at different things. and also many time there is so little info given on a problem thats why it involves so much guess work. everybody says it could be this it could be that but it all a guess. when you look at things visually the experienced can see problems that the not so experienced can not see, or have no idea what to look for.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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