Started the truck a few weeks ago started fine then the next day went to start it and it was sluggish but when i shut if off it just clicked. So i assumed it was the starter just got the time to swipe it out…
Would a bad vacuum pump make the pickup spit, sputter, smoke and loose power. Or is it the catalytic converter?
The vacuum pump on the 6.5L engine provides vacuum for operating emission controls, cruise control and heater and A/C servos.
That being said, I do not think the vacuum pump has anything to do with the engine spitting and sputtering or the loss of power.
If the catalytic converter was clogged, it could cause the issues you are having.