hard to start?
 

here's the problem i just installed a wallbro 255lph fuel pump and now it is hard to start it at first but after a few sec of cranking it it starts up, and it runs just fine other than that.

Re: hard to start?
 

Check to make sure it's holding good pressure. It's possible the o-ring is in wrong or something else is incorrect making it bleed off pressure.

Re: hard to start?
 

an adjustable FPR is a really really good idea with such a large pump.

most adjustable FPRs allow you to have a gauge mounted in it.

Buy the above two items and make sure your fuel pressure is at a stock 38psi at idle without the vacuum line connected.

get back to us when you get that done.