Does it idle odd after the engine is warm? Also are you running pump gas or ethanol?

 

when it comes down to the misfire in cyclinders, what could be the main problem of it? bc im having a misfire in my cyclinders.

 

Try to determine whether or not the code triggers at idle or cruise

-Ignition system not up to snuff (Plugs, wires, coils,etc...)
-Too much idle timing
-large gaps in between cells in timing and fuel maps
-drivetrain harmonics being picked and fed to the ECU (Mitsubishi's answer) to the 03-04 P0300. Their are to rom updates to try and fix it
-Issues with head components
-Some Cams have been know to be not so friendly over the years

Just some things to look at. If everything checks out I'd disable the damn thing in the rom and be done with it

 

Uhh, you could go back and read post #3 again. You question has been answered.

 

The plug wires have been a weak link. If you are convinced that the ignitio system is to blame and you've already done the plugs...try the wires.

Good luck.

 

I have the same problem with my kelford 272 there's nothing really that can be done form what i have been told due to the cams