99 gmc 1500
I have a 99 gmc 1500 5.7 bought the truck guy said
it needed fuel pump came wit a new one put it in
ran fine hurricane came threw and got water in the
tank got it all all put a full tune up on it then n the
last couple weeks after sitting for awhile won't
start put a dash of gas n throttle body fires up idles
fine but has no power won't even spend tires on
dirt every once n awhile it will fire up fine now I
have to put gas n throttle body to fire up every time
I drive it if I ease on the throttle it goes down the
road but fills like it's loosing something get down
on it fills like missing n tranny slippn but tranny is
fine need help asap
You may still have water or condensation in the tank and lines,water is hard to remove when something like this happen,s,your fuel filter is made to stop water from going to motor,i think it may be your issue,change the fuel filter,and add some high octane gas and fuel additive to it,may solve your issue,HTH.
Check for engine codes. You could also have a plugged catalytic converter
Try a bottle of Drygas in a full tank of gas. It'll absorb any water in the tank and lines. Change the fuel filter as well. Even the smallest amount of water in a fuel injection system will wreak havoc on the injectors and your performance. HTH. -Jim
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