my car has hard starts when hot.

[olympusheights123]

Ok, time for a little background history. My car ever since i bought it took forever to start. I discovered it had a bad fuel pump so i changed it and it got better. Now lately its been hot out and whenever it is it has a bit of a hard start, not as bad as it was before i changed the fuel pump but still enough to annoy me. now this also haplens after i get the engine to operating temp and let it sit for about four hours even in cool wheather, but if i try to start the car within that four hours itll most likely start no problem. I was thinking the fuel was evaporating in the lines due to heat but im not sure. What could the problem be??

[t.mcginley.jr]

First things first, check your ECU for error codes:

http://www.nicoclub.com/archives/nissan ... ostic.html

It's possible your just have a bad coolant temp sensor or fuel temp sensor.

[olympusheights123]

I think it might be the fuel temp sensor, ill check the codes .