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Re: SBC sputters/bogs/hesitation under hard acceleration
Turned timing down, and it is still running about the same. I need to throw a light on it to double check what exactly its at.
I have jus recently took the top end of the carb apart, i had a clogs accel pump nozzle. So i had to take the metering rods and springs out, and i checked the floats for stickiness / height. Everything seemed fine.
Checked for vacuum leaks, and to see if the vac adv held a vacuum or if it leaked...
As far as the distributor position. Even if the distributor was one tooth off, wouldn't that just limit the range of timing (retarded-adv) that i would have. and if i needed more, and say the vac adv was hitting the intake. then i would have to remove and re-position the distributor?
I am starting to think it is Fuel pressure personally. Yesterday the car started just fine. i went around the neighborhood a few blocks, and then parked it outside in the rain bc i had some stuff to do in the garage. Few hours later i went to start it again. and it just cranked for about 2 min straight. and pumping the pedal didnt help one bit....I have an inline gauge on the pump to carb fuel line. And sometimes it reads around 5 psi, and sometimes the car is running and it is at 0 or close to it. I don't think the gauge is bad. However my question it. Lets say the engine is running and the gauge shows 5psi. if i give it WOT in park, if the fuel pump was bad would i see the pressure drop? Or if this an under-load situation. Where i WOT the engine while moving or from a stand still in drive, and the fuel pressure isnt there to move the load? Thanks for all the help.
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1985 Chevy, El Camino, 350, 4bbl, Full Length Headers, 600cfm Edelbrock Carb, THM350
1992 Chevy, Camaro, 3.1L MPFI, BONE STOCK
Last edited by inforcer958; 06-01-2012 at 10:35 AM.
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