Fuel pressure with key on?
01-24-2006, 12:16 PM
#1
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Fuel pressure with key on?
Just wondering if gauge should show pressure when the key is turned on but not started. After it starts, pressure quickly jumps to 15.
01-24-2006, 12:38 PM
#2
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Good question. The fuel pump cycles for a few seconds if you have not started it in a while. If you have the pump WILL NOT run until you start the engine. The VP-44 has been know to "start hard" if the fuel pressure is high before the engine starts, so DC put a "delay" on running the FP until the engine is running.
Perfectly normal.
Congrats on installing a FP guage. 15 PSI is a good thing.
Perfectly normal.
Congrats on installing a FP guage. 15 PSI is a good thing.
01-24-2006, 01:01 PM
#4
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Yea, mine will hit 15psi as the pump cycles then will drop off until I start the truck. Then will idle at 15psi. The lift pump runs for about 15secs with the wait to start light/grid heaters.
Stephen
Stephen
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