Mackengine Posted December 5, 2018 Share Posted December 5, 2018 we have an 06 MP7 with a miss, computer saying injector #3. are there any special tools needed to perform this ? Quote Link to comment https://www.bigmacktrucks.com/topic/54960-mp7-engine/ Share on other sites More sharing options...
steeler Posted December 5, 2018 Share Posted December 5, 2018 What is the fmi on that code? 5 or 7? Could be that it needs the new style pins in the harness. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/54960-mp7-engine/#findComment-410727 Share on other sites More sharing options...
Mackpro Posted December 6, 2018 Share Posted December 6, 2018 (edited) +1 on what Steeler said. Also , there is another bulletin on injectior fault code due to the engine brake malfunctioning. I believe it’s only on the MP7 that this would happen on. The FMI is key in determining what to do next Edited December 6, 2018 by Mackpro Quote Link to comment https://www.bigmacktrucks.com/topic/54960-mp7-engine/#findComment-410767 Share on other sites More sharing options...
Mackpro Posted December 6, 2018 Share Posted December 6, 2018 FMI 3 or 5 could be the harness end as Steeler said . FMI 7 with miss or running rough could be oil control valve stuck open or stuck engine brake plunger on rocker arm 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/54960-mp7-engine/#findComment-410774 Share on other sites More sharing options...
steeler Posted December 6, 2018 Share Posted December 6, 2018 12 minutes ago, Mackpro said: FMI 3 or 5 could be the harness end as Steeler said . FMI 7 with miss or running rough could be oil control valve stuck open or stuck engine brake plunger on rocker arm Good catch. I should have said fmi 3 or 5. Not 7. Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/54960-mp7-engine/#findComment-410775 Share on other sites More sharing options...
mp8_macky Posted December 9, 2018 Share Posted December 9, 2018 if you are replacing injector make sure to program new injector trim codes/files. you will need ptt program to do that. also, injector cups are common issue on those Quote Link to comment https://www.bigmacktrucks.com/topic/54960-mp7-engine/#findComment-410988 Share on other sites More sharing options...
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