Re: Flathead rebuild
Marvel Mystery Oil in the cylinders will loosen crud between pistons and rings. A person can put MMO in the fuel to loosen up valves and rings after a long time setting. It may get the rings working again or they may just be worn out. A compression check will tell.
It takes a while for the oil pump to fill up the valve chamber on an engine that has leaked down due to a long slumber. I usually pull the distributor and pour a quart of oil in there before starting it up. I do this before refilling the sump after a complete drain of old oil. This keeps a fresh supply of oil down in those mains for an initial start.
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