what could cause the car to turn over but have a hard time starting? on 2003 Nissan Altima

Its been starting fine but the other day after I turned it off for about a hour I went to start it and it took a few times. Ive been told it could be a few things...cam/crank sensor, fuel relay,fuel pump or filter. After I got it started it ran good until I shut it off then it did the same thing. can anyone give me some help so I don't wast a bunch of money and time?

by in Oil City, LA on March 13, 2014
2 answers
ANSWER by on March 13, 2014
Start by check fuel system.
ANSWER by on March 13, 2014
1 hour (or less) of diagnostics by a competent shop/mechanic/tech/whateverthehellyuowanttocallem might save A LOT of MONEY and guesswork! Just a thought , next time it's in the situation you describe (hard re-start when warm) , try putting the gas pedal ALL the way to the floor and HOLDING it there , while cranking and see if it starts easier. Bring that info with you.