Fuel pump pressurizing twice - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 4 Old 05-02-2014, 04:26 AM Thread Starter
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Fuel pump pressurizing twice

Hi all!
Need some help.
My V-strom -12 was in for a 24 000 km service with adjusting valves, etc. After a few days I discovered that the sound of a fuel pump pressurinzing sounds on two occasions. The first time when ignition is on and the second time when you press the start button. Is it normal?
Thanks for the reply!
Vlad
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post #2 of 4 Old 05-02-2014, 05:18 AM
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As long as the engine is running, including starting, the fuel pump is running.
But how are you able to hear this under the much louder noise of the starter cranking the motor?
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post #3 of 4 Old 05-02-2014, 06:34 AM
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The pump cycles on when the pressure is low and off when the pressure is high enough.

Exact timing is a random number.

Peter
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post #4 of 4 Old 05-02-2014, 06:01 PM
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I dont think that the pump cycle On and Off. She is continusly running and a pressure regulator return the excess in the tank.
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