So i have recently noticed that ONLY and yes seriously ONLY when I refill my tank my truck starts up the first time really slow like its starving for gas. and every other time it starts up fine.. its like it looses pressure when i undo the gas cap.. any ideas?

 

That is weird, because the evaporative emissions controls normally put a bit of vacuum on the tank, not pressure.

How about if you go out when the tank is half full, take off and replace the gas cap. Does it slow start then, or only when you fill up the tnak?

 

havent tried that... but i will now!!

 

Tried that didnt matter. still having issue
BUMP!!!!

 

Next time you get gas try and prime the fuel pump before starting. Turning the key forward but don't start, listen for the fuel pump to prime then shut off. Do that twice then start the truck. See if that makes a difference.

 

will do!

 

Ahh still happneing. tried priming the fuel pump first. nothing works. turns over on second try and EVERY SINGLE OTHER start no problems. im freaking stumped.

 

Are you trying to squeeze as much fuel into the tank as you can every fill-up ?
Next time you get gas , stop filling when the pump nozzle clicks off the first time , don't try to top off the tank.
It also wouldn't hurt to check the emissions canister to see if it is full of raw gas.

 

no i dont top it off

 

I'd try scanning it for a pending code.
Could be the evap solenoid sticking for
some reason, but no use throwing parts
around without a code to go by.

After 2 consecutive faults the MIL will
light up, so it'll store a code eventually.......

 

My truck quit on me today. Started up and had a rough Idle. Drove to the other side of my work parking lot and it continued to idle rough and quit. Started back up and quit again. Now it won't stay running. Fuel filter is changed, fuel pump comes on and I have spark. Any idea's? Fuel Problem?

 

CEL ? Get the codes pulled

 

No codes to pull. Had a buddy come over today and it didn't have any codes. Any other suggestions? Maybe alarm or key? Throttle position sensor?

 

Aight its still happening and today it happened worse than ever. BUt yet again. the second I drive the truck and turn it off and on again its perfect. This time the oil pressure gauge was droppin for abit but with some throttle it stayed fine. lasted for only about 2 minutes or so. and still no hinder in power or misfires!

 

BUMP

 

Check the fuel pressure switch and turn it off and back on again.

 

? ok how ? Ill take anything its still happening!

 

It should be under the passenger side dashboard behind the carpet. You are gonna need a small flat head screw driver to pop the button up. Wait about 5 minutes then push it back down.

 

SO i have come to the conclusion that it is the actual pressure and speed of the gas entering the tank that messes something up. It must be hitting something on the pump assembly to cause it. I dont understand how or why....

 

Well you can always drop the gas tank and take a looksee to find out what is wrong.