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Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 26054
Experience:  Technican turned service manager with multiple lines of equipment and rental units.
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Have an 8770 seems to be sucking the secondary fuel filter

Customer Question

have an 8770 seems to be sucking the secondary fuel filter dry
Submitted: 7 months ago.
Category: Construction and Road Equipment
Customer: replied 7 months ago.
i have pulled off the tanks nothing blocking pick up tube while tanks off back blew threw the line that feeds the fuel filter all clear
there is a lift pump and an electronic shutoff that is in that fuel circut dont know which is causing my isuues
Expert:  Curtis B. replied 7 months ago.
If the secondary filter runs dry, the fuel transfer pump is not keeping fuel moving. Not meaning the pump is bad, but the suction to it may be leaking. The system up to the transfer pump is suction, so it has to be vacuum tight. Best test is to attach a test line to the inlet of the transfer pump, and drop it into the fuel tank or a separate fuel container and run test. If it works, there is a vacuum leak or restriction before the transfer pump. To find it, eliminate one component at a time, until you isolate it.
Expert:  Curtis B. replied 7 months ago.
Did you find problem?

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