The Ford Barn - View Single Post - Low Compression

alanwoodieman · 02-11-2019, 05:32 PM

we will assume that the engine was warm, the throttle was wide open, all plugs removed and you let it spin for 4/6 revolutions. if this resulted in that low a compression then you can try a couple of things--what was the vacuum when the engine was running? 20 inches? if not do you hear a popping sound out of the carb or tailpipe? indicates a valve problem. I would soak the engine with a mixture of acetone/ATF after a few days then I would squirt some oil down each spark plug hole, put the plugs back in and fire it up. and see what happens

02-11-2019, 05:32 PM	#7
alanwoodieman Senior Member Join Date: May 2010 Location: upstate SC Posts: 2,964	Re: Low Compression - keep trying or rebuild? we will assume that the engine was warm, the throttle was wide open, all plugs removed and you let it spin for 4/6 revolutions. if this resulted in that low a compression then you can try a couple of things--what was the vacuum when the engine was running? 20 inches? if not do you hear a popping sound out of the carb or tailpipe? indicates a valve problem. I would soak the engine with a mixture of acetone/ATF after a few days then I would squirt some oil down each spark plug hole, put the plugs back in and fire it up. and see what happens