Engine lopes after load
#1
Engine lopes after load
Now almost everytime I drive the truck it seems to get worse and worse. I pulled out in front of a car today on accident and had to give her the beans....... After I reached about 35 mph I let of the pedal and the engine started to lope. It went from 500 rpm to 750 for about 10 seconds then stoped.
It will do it almost everytime.
Here is what I have done so far. Droped the tank and cleaned the pre-filter on the sending unit. Removed the fuel heater bowl and cleaned that pre-filter as well. Install a new fuel filter.
The throttle cable and linkage was replace already.
I know I have good fuel because my ISX is running fine on it.
Tomorrow I will : check vacuume on the fuel line before the lift pump. If all is good there
I don't know what else to do
It will do it almost everytime.
Here is what I have done so far. Droped the tank and cleaned the pre-filter on the sending unit. Removed the fuel heater bowl and cleaned that pre-filter as well. Install a new fuel filter.
The throttle cable and linkage was replace already.
I know I have good fuel because my ISX is running fine on it.
Tomorrow I will : check vacuume on the fuel line before the lift pump. If all is good there
I don't know what else to do
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