fuel problem under hard acceleration
Thread Starter
6th Gear
Joined: Sep 2019
Posts: 6
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fuel problem under hard acceleration
1985 C4 with 85K Standard 350 with TPI. Barn find sat for 12 years. Got it running and took it out for a good drive. About an hour into the drive at varying speeds and roads, I had the engine almost die out. Feathered the throttle and finally got it to run. It did okay unless I tried to accelerate fast.It would bog down and once died out. 20 seconds later it cranked and ran okay if I babied it. Need help in diagnosing problem before I spend a lot of money.
Racer
Joined: Feb 2020
Posts: 484
Likes: 109
From: Fairfax, Virginia
1985 C4 with 85K Standard 350 with TPI. Barn find sat for 12 years. Got it running and took it out for a good drive. About an hour into the drive at varying speeds and roads, I had the engine almost die out. Feathered the throttle and finally got it to run. It did okay unless I tried to accelerate fast.It would bog down and once died out. 20 seconds later it cranked and ran okay if I babied it. Need help in diagnosing problem before I spend a lot of money.
Team Owner
Joined: Sep 2001
Posts: 62,171
Likes: 1,735
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Filter should be replaced either way, not that hard to do.
I would then drive around with a FP gauge connected to the rail and taped to the windshield. If the pressures arent holding then that points to another problem.
Then when youre back home, turn the engine off and watch that FP. If its not holding, likely injectors are stuck open.
I would then drive around with a FP gauge connected to the rail and taped to the windshield. If the pressures arent holding then that points to another problem.
Then when youre back home, turn the engine off and watch that FP. If its not holding, likely injectors are stuck open.
Le Mans Master
Joined: Feb 2005
Posts: 6,485
Likes: 566
From: Clearwater Florida
..... Fill the tank and try it again ... when the fuel level drops much below a half tank the fuel can slosh out of the small sump in the bottom of the tank and briefly starve the engine .....
