Dodge Repair Questions? Ask a Mechanic for Answers ASAP
What year, model and engine is this?
Do you have any more codes?
have you done a tune-up yet?
Specifically spark plugs?
What did the old spark plugs tell you? Were any black with soot, did any smell like gasoline, were any burnt, etc specifically those in question?
Have you done anything else such as a new fuel filter, check the ignition timing, etc? Please tell me everything you have done/checked.
When did these misfiring cylinders occur?
Ok, so the misfiring was there before the new spark plugs?
Any other work done?
Here is what I would do, check the fuel pump pressure, change the fuel filter and have the fuel injectors cleaned and then clear the codes and see how that goes.
Did you try all that?