It's hard to start after sitting for awhile like 2-3 hours, and has no pressure in the tank. To try and solve the problem i have replaced the injectors, put fuel system cleaner through it and changed the coolant sensor. Also it misses on idle and when i try to take off in 1st it will splutter and then go good except when i floor it. (also does it in 2nd). the next thing i will be checking will be the fuel filter.
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Remove the gas cap, to let some air into the gas tank.
As the gasoline has been consumed, what's left behind
is a partial vacuum, making it difficult for the fuel-injection pump
to pull gasoline from the tank. Remove the gas cap,
to equalize the air pressure. Works for me (and my 2002 Taurus).
it is very possible and i can tell you a way to help you see if that is the issue. after your car has sit a while (as long as it usually takes before it acts up) jump in the vehicle and turn the key to the postion just before the vehicle begins to turn over when all the dash lights come on. when the key is put in this position the fuel pump runs for a few seconds and then stops until vehicle is cranked, allow the pump to run for 5 seconds then turn the key back off. then return the key to the "run" postion i mentioned before and wait a few seconds then try to start it. if it fires right up you have allowed the vehicle to build fuel pressure before you started it, indicating you have a fuel pressure issue and you are most likely looking at a weak fuel pump.
Have you checked the fuel pump relay with an ohmmeter/multi-tester? You will have to follow the power lines to find it. I would check the relay first. Then check fuel rail fuel pressure. It may be faulty fuel pressure regulator or a sensor. Is your check engine light on? If so, I would have the codes read to pinpoint exact problem location. Check your spark to make sure each plug is firing.
IT IS PROBABLY THE FUEL PUMP. THERE IS AN ANTI-DRAINBACK VALVE THAT IS SUPPOSED TO HOLD THE FUEL PRESSURE WHEN THE KEY IS OFF. IT SOUNDS LIKE YOURS LEAKS. TO TEST IT, LET THE VEHICLE SIT LONG ENOUGH TO ACT UP. KEY THE VEHICLE OFF TO RUN THREE TIMES BEFORE CRANKING IT OVER. IF IT STARTS EASY, YOU CAN BET THE FUEL PUMP MODULE IS THE PROBLEM.