Recently acquired a 92 K1500 RCLB. Truck has 130,000 miles.
Recently gave it a tune up, its been running great. Plugs, Wires, Rotor, Cap, Coil. Not it runs rough at idle, and any time I come to a stop as if it has a vacuum leak. Will start checking into this in the am.

Anything else that needs to be checked. Will also check the pcv valve.

What else, anyone else had this problem.

thanks

brian

 

pcv valve wont make your truck idle rough. it's got to do with the coil pack or vacuum

mine had a problem with the coil pack bc it wouldnt idle right, and it would sputter around 60-70mph

GL