Acceleration problems

[Ejc1360]

Hey guys i need ur help Trying to figure out whats causeing this. Upon getting on the gas my blazer seems to bog down loose power hesitate stall until i let up on the throttle I don't no any other way to explain it. I own a 91 chevy blazer it's fuel injected 350ci 161000 miles on it and it's stock everything. This problem is embarrassing and has me worried. During normal driving it's fine the problem occurs only when I floor it to pass or getting on Freeway. Any feedback will be greatly appreciated.

 

[blazinzuk]

Fuel filter or pump going bad

 

[shaun89]

x2 on the fuel filter,when my truck was TBI it kept getting slower, and i couldnt figure out y,i replaced it and it felt like another 50hp lol or the pump like he said,check ur fuel pressure at the throttle body or somewhere near it. it should be 12-14 if i remember correctly.

 

[shaun89]

basically anything to do with fuel delivery. it sounds like ur not getting enough fuel when the throttle is all the way open so its leaning out and power is dieing out until u let off and get the air/fuel ratio correct.

 

[Ejc1360]

Thanks for the feedback. I just wanna say I haven't had that problem since I filled up the tank. Those problems occurred when the tank was almost empty could that have been the problem?

 

[shaun89]

maybe ur pump is not dead but just tired,so it cant suck as much gas and pressurize it for the injectors. or like mine did, it had a crack in the pick up line from the baffle coming loose inside the tank and crashing against the pick up tube until it cracked and almost snapped