mcratchet1 Posted 7 hours ago Share Posted 7 hours ago (edited) Hey everyone so I have another strange issue. 2013 mru 613 mp8 motor Driving truck back from job and felt it missing and losing power. At shop checked 2 active codes injector 1&3 open circuit. Shut truck off to cool ate lunch. Started truck up to move and it’s running perfect no more miss or active codes. Is this maybe a short or damaged wire to injector harness? Any help would be appreciated just don’t want to get stuck somewhere Edited 7 hours ago by mcratchet1 Quote Link to comment https://www.bigmacktrucks.com/topic/76167-intermittent-injector-codes/ Share on other sites More sharing options...
fjh Posted 7 hours ago Share Posted 7 hours ago 3 minutes ago, mcratchet1 said: Hey everyone so I have another strange issue. 2013 mru 613 mp8 motor Driving truck back from job and felt it missing and losing power. At shop checked 2 active codes injector 1&3 open circuit. Shut truck off to cool ate lunch. Started truck up to move and it’s running perfect no more miss or active codes. Is this maybe a short or damaged wire to injector harness? Any help would be appreciated just don’t want to get stuck somewhere this maybe a short or damaged wire to injector harness? Yes It can be also caused by injector cups and pin connections ! The only way to find out is too ! pull the valve cover and check ! Quote Link to comment https://www.bigmacktrucks.com/topic/76167-intermittent-injector-codes/#findComment-585792 Share on other sites More sharing options...
mcratchet1 Posted 7 hours ago Author Share Posted 7 hours ago Doing that right now the guy a bought the truck from a year ago had all 6 injectors replaced beginning of 24. I don’t know if cups were changed. Quote Link to comment https://www.bigmacktrucks.com/topic/76167-intermittent-injector-codes/#findComment-585796 Share on other sites More sharing options...
fjh Posted 7 hours ago Share Posted 7 hours ago the wiring is shit on these ! It being soaked in oil and heat adds to its shittyness! Also look for oil push at engine ecu plug The sump sensor is also chronic ! The base engine is good aside from cups ! the bolt on stuff is debatable Quote Link to comment https://www.bigmacktrucks.com/topic/76167-intermittent-injector-codes/#findComment-585797 Share on other sites More sharing options...
mcratchet1 Posted 6 hours ago Author Share Posted 6 hours ago Ok thanks, this is my first mp8 I have had all e7 past 20 years. The blowby tube that comes out of cover. Does that twist out or take the cover off with it Quote Link to comment https://www.bigmacktrucks.com/topic/76167-intermittent-injector-codes/#findComment-585802 Share on other sites More sharing options...
mcratchet1 Posted 5 hours ago Author Share Posted 5 hours ago I got cover pulled I do not see any damaged wires or looses plugs. What would be the next thing to check Quote Link to comment https://www.bigmacktrucks.com/topic/76167-intermittent-injector-codes/#findComment-585806 Share on other sites More sharing options...
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