I RECENTLY STARTED TO HAVE PROBLEMS WITH MY CAR NOT STARTING AT TIMES, I KNOW IT WILL THE FUEL INJECTION, BUT I DONT KNOW WHAT IT IS, MY FUEL PUMP IS FINE IT ALMOST KNEW, BUT I DID NOTICE THAT WHEN IT IS HOT OUT IT IS HARDER FOR MY CAR TO START. I TURNOVER THE KEY AND THE PUMP DOES NOT START TO PASS FUEL, I JUST CHANGED THE FUEL INJECTORS AND THAT STILL DOES NOT HELP.!!!! WHAT SHOULD I DO!!!!!!!!!!!!

i have heard of this problem with a few different makes of vehicles, and it was typically either a fuel pump issue (which you think it is not), an ECU problem, or a crank sensor issue...any past issues with those?

It is the main fuel relay. I had the exact same problem, I changed my main fuel relay and have not had a problem since. It costs about $70 for the part.

Look for a corroded or faulty fuel pump relay/fuse.