Trouble starting when engine is warm

[104528]

I've got an '03 Altima 2.5 SL that starts fine in the morning but after I've driven a while won't start. It acts like it's flooded. If I really work with it for a while (5-10 minutes) I usually can get it to start. I've done a lot of checking and have so far replaced the camshaft and crankshaft sensors, the plugs, one of the plug coils, the coolant temperature sensor, the radiator and the valve cover. I'm really out of ideas at this point. Any help would be appreciated.

[RicerX]

Welcome to NICO!

I used to own a 2004 Sentra Spec V (shared the same engine). I've heard of this problem coming up with faulty fuel pumps (a very common problem on the B15 Spec Vs).

How many miles do you have, and have you ever replaced your fuel pump?

[104528]

It's got about 245000 miles - almost all highway. I've never replaced the fuel pump so maybe that's it. I didn't think it was the fuel pump because it starts fine when it's cold and once it's started it runs great - no hesitations or running rough at all.