I changed the fuel pump in my 2001 SSEI because of a bad sender. Up to that point I had no other problems. After I changed the pump I have to crank then stop then crank again or crank for a long time to get the car to start. I am loosing pressure in the fuel system when the car is not running. I replaced the pump again (warranty) and it is doing the same thing only now I keep getting a "check gas cap" message and after a while of driving I will get a Check engine light and an evap code. I currently have the lines to the pump disconnected thinking that I need new o rings but I don't see any? The lines are the quick disconnect kind. I am thinking that it is not sealing thing and that is where I loose my pressure from. I don't see any visible leaks but I could smell fuel when I took the cover off of the fuel pump area. Am I just missing something?

Check the other pump to see if maybe a o-ring or seal got left behind. Compare all of your quick disconnect fittings to others. If one is missing a seal, you will notice after comparing to others.

those quick connects frequently leak when disturbed. inspect them while you turn the key on so the pump primes.

When I looked at the lines they don't look like you can replace anything. The sleeve is hard plastic then it looks like orange (maybe the seal) but so far down I don't see how it could be removed. Anyway, I put the lines back on and pulled on them a bit and the next 3 times I started the car it started like it should. Came out of dinner and it was back to having to crank it twice to start it. I don't mind replacing what is bad I just don't know what I need to replace at this point.

What brand of pump did you use?

I don't know, got it on ebay. When I did that last summer I did not know about all the problems people have with the cheap aftermarket pumps. If the pump is the problem, I would be willing to change it out for something that will fix the problem I just want to be sure that changing the pump will fix it because a Delphi pump is expensive. Other then loosing the prime, the pump works perfect..

you see gas leaking out of the line?

I do not see any fuel leaking from the lines while the pump is running or after I shut it down.

Do you have a fuel pressure tester?

if it was the lines leaking you would see drips, otherwise got to be the pump, unless your FPR went at the same time, not normal but thats my kind of luck.