I have a 89 cummins in my chevy an lately my throttle has been touchy like it has more power at 1/4 throttle then it ever had it used to only do it when the engine was cold in the winter then when the engine warmed up it would go away.
Now it's doing it all the time even when at running temp. Another ? For u guys what affect would having a tank in the bed have on the lift pump since the fuel tank is higher better? Worse? Mine is 75 gallons.