'96 blazer problems

Engine sucks down gas, they computer sed "Random/multiple cylinder misfire detected" i think the number is p0300. check engine light is on and it idles rough. its a 96 4.3L 4x4 s10 blazer. N e help would be great!! thanks. ive been told it might be the coils or the ignition module. :evillol:

-Rick :evillol:

Moved to the Blazer forum.

Start fixing this by doing a tuneup.

When is the last time you have replaced the plugs, cap and rotor, fuel filter etc....