cel cylinder missfire
 

truck has a real loud hollow sound that you can hear throught the intake pretty good truck threw cel and said cylinder three missfire.....bad injector ? messed up intake valve? any ideas

Pull the valve cover and disconnect the wires on #3 when its running if it does not fire then you probably have an injector thats bad and can just replace it. Hope that works sorry for not responding sooner haven't been on for a while.