Can’t figure out this misfire
#1
09-25-2019, 07:26 PM
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Can’t figure out this misfire
So misfire. P0300 po302 p0307 so multiple random misfire on cylinder 2 and 7. Has new plugs wires cap and rotor. I’m led to believe it’s fuel related in some regards. It’s a slight misfire. Not a definite stumble. When at an idle I can hear dun dun. Literally that’s what it sounds like. Truck doesn’t stumble and idle doesn’t drop. When moving over 2k it stumbles for a second when held around 2-3k but when I press a little harder on the gas no misfire at all. Possible map? Or almost guaranteed injector/fuel pressure related?
#3
09-25-2019, 07:33 PM
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#5
09-26-2019, 09:24 AM
#6
10-07-2019, 06:43 PM
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#7
10-07-2019, 06:50 PM
Well, they are right next to each other in the firing order..... Did you run your wires per the TSB for just such an issue? (it's in the faq section, if you aren't aware of it.) Aside from that, I would consider swapping the injectors on 2 and 4, and see if that miss moves with the injector. (they are easier to get to than 5 and 7. 
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#8
10-07-2019, 10:50 PM
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Well, they are right next to each other in the firing order..... Did you run your wires per the TSB for just such an issue? (it's in the faq section, if you aren't aware of it.) Aside from that, I would consider swapping the injectors on 2 and 4, and see if that miss moves with the injector. (they are easier to get to than 5 and 7. )
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