Posted by Janicholson on November 11, 2022 at 16:28:33 from (24.240.46.228):
In Reply to: Ford 640 compression posted by Ramseyer35 on November 11, 2022 at 16:16:06:
Grandpa is probably correct. Sitting as long as it did, the valves are probably not totally frozen it their guides, but rusty enough to stick open when pushed open by the cam. another alternative (common) is bent pushrods from valves that are in fact stuck and immobile. Pull the valve cover and look at the valve train. Spraying a good penetrant on the stems (through the sides of the springs) then tapping the rocker with a plastic or brass hammer (repeatedly, but gently) can free them. Some may need assistance moving back up using light prying and tapping. PB Blaster is good, as are others. WD40 is not, it is not intended for penetration or lubrication either one. Jim
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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