Quote:
Originally Posted by funola
Maybe I do not understand how the priming pump is plumbed. I thought it is in series with the lift pump. If true, fuel has to go from priming pump/lift pump to secondary fuel filter, then to IP. If the filter head banjo port is left open, supply pressure to pump cannot build.
Do you have a detailed diagram of the fuel system? It would really help me visualize how it is suppose to work.
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I don't believe that the screw that secures the three way banjo will extend into the secondary filter. This cannot be the situation, otherwise the return system would be directly plumbed with the supply system and the IP would never build pressure.
It must be possible to build pressure with the three way return banjo fitting removed from the top of the secondary.