leaky fuel pump

[gundoca]

I rebuilt the original fuel pump about a year ago and all works well. Problem occurs after it sits for extended periods, the pump leaks around the diaphragm a lot and I have to tighten the the screws down. I'm guessing that it is from the diaphragm drying out between uses, can't imagine the screws loosening that quickly. Should I apply locktite, silicone the diaphragm or something else?

 

[ponymare]

You may have over tightened the screws and warped the pump housing.

 

[39topless]

You may have over tightened the screws and warped the pump housing.

Good idea. Take the top housing part off and place on a mirror or some really flat surface and take a look. If warped, it can probably be milled back to flat.