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Steve, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 6814
Experience:  30+ yrs. experience, MMI, HD technician, HD early, engine rebuild/performance, bike builder, kit bike program manager, CCI 2001-2004
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When I turn the ignition and fuel pump primes. I can see

Customer Question

when I turn the ignition and fuel pump primes. I can see only one of the two fuel lines move fuel. can you please help me out
Submitted: 7 months ago.
Category: Motorcycle
Expert:  P.J. replied 7 months ago.

What make and model of bike are you working on?

Customer: replied 7 months ago.
2007 V ROD 1130cc
Expert:  P.J. replied 7 months ago.

Ok, I'll open the question up for someone to answer.

Expert:  kwiggins29059 replied 7 months ago.

Hello, the second line is your return. If there is no fuel coming through the return then the pressure regulator is most likely bad or there is no vacuum signal going to it.

Expert:  Steve replied 7 months ago.

there is no back pressure on he return line, so it's not pressurized like the fuel supply line, which is why you wouldn't see it do anything any time. it doesn't mean it's not working correctly.

are you having a problem with the engine, or was this just a question about the fuel lines?

tell me everything you can.