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 - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
... [Read Article]
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