Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Is pump always on at same speed when engine is running?

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Old Dec 20, 2006 | 07:14 PM
  #1  
Learnhead's Avatar
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From: Dahlgren, Virginia
Default Is pump always on at same speed when engine is running?

Is the pump always on when the engine is on, and if so is it always on at the same speed? It would seem like unnecessary wear on the pump to always have it on high.
What about boost a pumps, do they only up the voltage across the pump when the engine needs more fuel?
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Old Dec 20, 2006 | 07:28 PM
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From: Hell AFB
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The pump is regulated with the intank regulator, they are allways on unlike some pumps that are pulse width modulated (pwm).

As for Voltage boosters, its only boosting voltage when activated, such switches that can be used are Hobbs(pressure) or a Wide open(nitrous).
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Old Dec 20, 2006 | 07:41 PM
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Pumps do run at the same speed.. they have no way of telling what psi they are running,

**** you just said that

yea .. regulator
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