[Guest]

Starts fine, runs fine for a little while, but as it gets warmed up, it starts to misfire and hesitate...stalls from speeding up from a stop. When I tried driving off from a parking space, it misfires, stutters then stalls...runs better when it's cold. What could this be?
Fixed the stalling by fixing a vacuum hose. But, it hesitates on acceleration. When I push the gas down, it sputters and skips a firing..kind of doesn't do anything....then fires...sputters...than accelerates. Could it be the fuel filter? What's up?

 

[77Impala]

Have the fuel pressure checked, may be that the fuel pump is starting to fail.