Hello Newbie here i am having trouble with my 2001 chevy blazer LT w/ 4.3l V6 it is misfiring on cylinder 5 have replaced my distributor cap, ignition rotor, plugs, and wires still having same issue can anyone help me troubleshoot the problem im trying not to spend a fortune.

 

How many miles on it? How often does it misfire?

 

Have you ran a cmpression test n this cylinder?

 

my 5th spark plug wire was not making a good connection i ended up pulling the boot back and getting the metal connector connected to the sparkplug and now there is no misfire and the SES light is no longer on. but odly enough there is a vacuum ball missing according to a good friend of mine now just need to find one so i dont lose acceleration goin up steep inclines. thanks to everyone trying to help.