My 2010 Dakota has 66,000 km on it. 3.7 V6, auto, 2 wheel drive. I had the plugs changed at 50K as recommended. The motor generally runs fine except at about 1600 to 1700 rpm. Then it will periodically misfire, just once. Speed is generally 77 or 78 kmh when this happens. I will then usually rev the engine to about 4500 rpm briefly and this cures it until it happens again, usually within 10 minutes.
I've run injector cleaner through it a number of times. It also gets driven every day.
Could this misfire be related to the plugs? Should I replace them with a hotter plug? I'm thinking that because briefly raising the rpm seems to clear it, as if the plugs were somehow briefly cleaned of whatever is causing the misfire.
Thanks for any help or advice,