Ok just got truck back together and running yesterday . I have a slight stumble and have codes 282 -284 which is cyl #8 . Could this be a electric problem or bad injector ? I just put 4 new sticks in the pass side .The drive side number 8 is a new injector #6 has 61,000 #4 has 15,000 #2 has 61,000 . Anybody have any ideas.