NTC 444 BCIV hesitation during acceleration

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Flying Monkey, Dec 2, 2022.

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Dec 6, 2022 #11

jamespmack Road Train Member

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Inderjit said: ↑

I worked at a Cummins dealer when the NTC444 came out. They were quite
problematic all right. Your problem sure sounds like a fuel restriction to me.
Is there a place to plumb in a vacuum gauge at the inlet of the fuel pump? If
I remember correct 8 inches of vacuum was the maximum Have a
good look at all the fuel lines for kinking. Debris in the tank.
Had a new machine once doing something similar, it was because of a
welding glove in the fuel tank.
Click to expand...

Plastic sandwich bags can be a large problem, one they are hard to see, and they float away when draw stops.

jamespmack, Dec 6, 2022

jamespmack, Dec 6, 2022

#11
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