I have a 2001 blazer.. i have a misfire that i have been dealing with for quite a while. it only happens at 2000 rpm.. have changed plugs and wires, injectors, no vacuum leaks changed all the lines. new fuel filter.

anything else you guys think it might be causing it??

 

i had a similar problem. mine was my ignition coil. then the problem came back but no where as bad. then it was the distributor cap and rotor button. so now i have a new msd igniion coil and an accel cap, and did have a rotor. but it broke in the middle and caused it to miss all the time. so i put a cheap one on cause the accel gave out so easily.

 

is the check engine light on?