To try to explain how it works a bit... The purge valve is sent a pressure signal from the governor when the compressor cuts out. If you think about a shop air compressor, the air release when the compressor unloads as it stops is the same thing that opens the purge valve on your truck. The purge valve could be sticking, it could be the governor, or, not likely, but it could be an internal leak in the compressor. Pay attention to when the purge valve closes, if its when the compressor starts pumping again, I would change the governor and go from there. Governors are cheap anyways.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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