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rforehand's avatar
rforehand
Explorer
Mar 28, 2015

How to test a fuel pump on an Onan 4000 generator

Could someone please just valid for me that I have taken the proper steps to test my Fuel pump, and offer your opinion on my findings? I have a 2014 Coachmen Leprechaun with Onan 4000 Genset. Gen ...
Class C
Harvard's avatar
Harvard
Explorer
Mar 28, 2015
These in line fuel pumps work by cocking a 12 VDC spring loaded solenoid that has a check vave. The spring provides the fuel pressure and the 12VDC power is a pulsed source that does the cocking.

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