Fuel Pump Info
#2
Every fuel pump on our trucks has to hold the line pressure after the pump energizes and so they all have some mechanism to prevent back flow into the tank. The pressure is also maintained at the other end of the line by the fuel pressure regulator at the intake end. You separate the two problems with the second part of the fuel pressure test at the fuel filter. Of course the fuel pump can fail by not pressurizing at all or insufficiently.
George
George
Last edited by GeorgeLG; 11-14-2021 at 11:04 AM.
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Stuntman Mike
2nd Generation S-series (1995-2005) Tech
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06-25-2010 08:55 AM