In addition to the symptoms the others note, a non-functioning vacuum advance can cause the engine to backfire out the exhaust when the throttle is suddenly closed from governed RPM.
Check by sticking on a timing light then noting the timing mark location with the engine idling. Now disconnect the vacuum advance hose and check it again. If the vacuum advance is working, the timing will mark will retard noticeably when the hose is disconnected.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
... [Read Article]
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