clfrye

Trying to firgure out what the problem may be. I have a hesitation when I go full throttle. I don't notice it in 1st or 2nd gears, they are too short, but I do in 3rd, 4th, or 5th. Any ideas?

Nuke

Sounds like fuel starvation, especially with the blower. Have you considered the GT500 fuel pump or something similiar?

clfrye

I have the GT500 fuel pump and haven't had any problems with it. The thing that makes me think the fuel pump is good is that the fuel pressure gauge is reading normal during these occurances. The boost gauge is reading normally as well.

mmarsh3014

What type of tune are you running? Could your ignition not being able to meet the demand be a problem, or would that be in every gear?

dysan

I'm having a hesitation/stumble issue right now myself. It happened after I just had my motor turned into a 302 stroker nearing the end of my break in miles. I have swapped my injectors and o2 sensors. My shop just pulled the mid-pipe(stock h-pipe) and they said there's alot of carbon in there so I'm hoping it's just clogged cats. I can force the stumble to happen if I'm in 5th at around 1400 rpms and lug the motor, at WOT it's random.

Hopefully it was just the extra fuel in the break-in tune and not something else. I'll know later Thursday after the tuner gets back from vacation and they re-dyno it.

mike castaldo

i would say injectors.. check your plugs maybe really rich if really black .or really white tiped way hot got problem alil gray to lite brown is what you want to see.. alil black ant bad.. check also if the electros for bluid up..

i am wondering if you are washing the cylineders if really rich.. is the persure gauge liquid filled gauge

dragrace4fun80

Don't you have to run a boost-a-pump for S/C apps?

sailing220

If you have the stock GT fuel pump. He said that he had the GT500 pump.