Posted by PM BAKER on July 05, 2011 at 07:34:59 from (24.110.108.198):
I installed Westwood F100-14 Filter Vacuum Gauge on my MF30B, it normally uses a Donaldson ServiSignal mini indicator that shows a red flag when limit is reached. I installed the gauge because it tells me exactly what is going on 0-30hg, not just a red flag like the Donaldson.
I installed the gage, and new filters. I restricted the air intake pipe with my hand almost airtight, and the gage did not move from zero. I removed it and ran a wire up the connector into the intake air stream where the gage connects to the fitting, to make sure there are no obstructions, there were none. I reconnected the gage, and tried again restricting the intake, and with the engine revd up,the suction on my hand was strong, but the gage registered nothing. I think it's a defective gage. The manufacturer is sending me another.
My question is, am I right in my procedure for testing? How can the engine run if I restrict the air almost totally? It was just for like 10 seconds, but I didn't notice much change. Shouldn't I see black smoke or something?
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