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Thread: Anybody know about diesels? Yanmar especially?

  1. #1
    Join Date
    Sep 2012
    Chesapeake Bay

    Anybody know about diesels? Yanmar especially?

    I am wondering about a Yanmar 2QM15. Specifically about the lift pump. My question right now is:

    Does the primary pump / lift pump require a flooded suction? Does the fuel tank have to be above the inlet of the lift pump? Or will the lift pump 'pull' fuel up from a tank which is lower than the lift pump.

  2. #2
    Join Date
    Apr 2015
    Chicago, IL
    It will pull although a higher tank location if preferable. Also, the priming lever on the pump moves very little fuel and requires hundreds of pumps to work. If you put a squeeze ball in line just before the lift pump it will make bleeding after a filter change (or if you lose prime) much easier.

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