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1985 dodge b150 starving for fuel
#766709 October 21st 2020 7:57 pm
Joined: Sep 2019
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New fuel pump, an electric one. New fuel filter, fuel lines blown out, fuel system cleaner, float levels are to spec.

Bogs down and wants to die on heavy acceleration.

Any ideas? Thank you!!

Re: 1985 dodge b150 starving for fuel
Vanube #766710 October 21st 2020 9:06 pm
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Possible vacuum leak ?


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Re: 1985 dodge b150 starving for fuel
Vanube #766723 October 22nd 2020 12:24 am
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Visually looks like fuel is shutting off after about 7 seconds of heavy throttle. Though I'm fairly confident fuel pressure is high and consistent up to carb.

???

Re: 1985 dodge b150 starving for fuel
Vanube #766743 October 22nd 2020 10:59 am
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It's possible that the in tank 'sock filter' is plugged. I have seen that before, open enough to run and accelerate lightly but not enough flow for hard throttle.

Re: 1985 dodge b150 starving for fuel
Vanube #766854 October 25th 2020 5:33 pm
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Since you're seeing this during heavy acceleration, have you checked the throttle kick down adjustment? It's the sliding rod which couples the throttle mechanism to the transmission. It's notorious for causing such issues. It adjusts fluid pressure in the transmission, so it's a big deal.

Do you have a service manual? The adjustment is described in the section on transmissions. I could dig up the adjustment procedure if you don't have it.

Also, the kick down rod should be spring loaded at both ends; be sure the springs aren't missing.

While you're in that area, before making the kick down adjustment, make sure that when you push the accelerator pedal to the flood that the butterflies are actually opening fully. If not, you can adjust the opening via the threaded rod which couples the accelerator pedal to the throttle mechanism on the carb.


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Re: 1985 dodge b150 starving for fuel
Vanube #771638 February 18th 2021 10:28 pm
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Knowing the fuel pressure can help. I’d install a gauge before the carb. I think 3 to 4 psi should be good.


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