[Bradley]

Got it.  Thank you Tony!

[Bradley]

unfortunately this exact failure happened to me on both of my SMX pumps and the repair is very simple using the parts and tool sent by Seaboard. The PVC pipe is essentially a ram rod to set the rings that hold in the spring loaded assembly. Surely you can resolve this yourself without taking out the pump.

[Bradley]

Thanks Rob for your reply.  This engine has about 1,500 hrs (vintage 1996) CPL 1975.  I have Racor 900 primary that I haven’t refurbished in 10+ years.  I know the Racor has a check valve so maybe it’s weeping causing the loss of fuel pressure.  I’ll pull apart Racor and re-build.  Not sure if the return side has dip tube. I’ll check for that next.  Do you happen to know if the Lift Pump has a check valve built into it.  What actual keeps the fuel gallery pressurized is it the Racor check valve and dip tube?  Trying to understand the mechanics.

[Bradley]

Not trying to highjack but if I have to pump the lift pump to add fuel pressure prior to starting is this an indication that the Lift Pump should be replaced?  Is there a check valve within the pump assembly that could be stuck open?  Is it difficult to replace Lift Pump?  Any ideas to why no fuel pressure and therefore no start?  Once I hand pump Lift Pump and hear squeaking it starts and runs perfectly.   

[Author]

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