The "shutter" and the "check engine"

I hit about 55mph and the truck started to shutter and the engine light came on. Hooked it to the laptop and it said there was a misfire in cylinder 2. I've changed all the spark plugs, wires, and swapped two coils around just to try to diagnose. Still having the same problem with the lack of power and a heavy shutter. Check engine light is on and off and sometimes flashes. All I know now is to start checking fuel injectors. I ran a bottle of Lucas through the gas tank with no luck. Do I pull the injectors and ultrasonic them? replace them? Anything else?

 

WHat code did you get? Did you do any research online for that code?

 

Your piston rings might be fried and your experiencing blow by which would explain lack of power and possibly the shutter

 

I would start with injectors.. do what you did for coils swap one with another if the problem moves then thats the cause..

 

make sure there is ZERO moisture anywhere near the plug boot or in the spark plug hole. ...i washed my truck and a day later had the exact same symptom. ..i had cylinder 3 misfire. i swapped plugs, changed wires, ect. ..turnd out to be condensation in the hole the spark plug goes in.