Personally I like the bulb in front of the filter to push the fuel since the fuel pump/vacuum will draw from the other side. Also, since you have the room, you might consider a clear bowl RACOR type fuel water separator. It is much easier to prime and you can draw water from the bottom without taking off the filter. If your bulb it not tight and staying tight, then you have a bulb/hose/o-ring problem. Good luck, MG
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