A common problem I have run into over the years with older tractors is the valves being adjusted too tight.Too loose is way better than too tight and old Farmalls have pretty weak valve springs anyway so the valves need time to close.Plus while the engine sat for years at least one of the valve springs had to be compressed the whole time.So when you turn the engine over slowly it'll shut fine but when running it'll be slow and make it run poorly.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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