mechanico Posted February 14, 2014 Share Posted February 14, 2014 have a 2001 mack rd dump truck with the e7 motor has the eup's. motor was running fine then the next day sitting out in the cold was started and it started to run rough. blowing white smoke. changed first 3 injectors same problem all 3 first cylinders 12 and 3 are cold out exhaust manifold. tried another computer same thing, disconnected jake brake too. the smoke is fuel coming out exhaust. but ran perfect the day before? Quote Link to comment Share on other sites More sharing options...
Solution Kyle 537 Posted February 14, 2014 Solution Share Posted February 14, 2014 Are the eup's pushin fuel up to the injectors? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
br549 Posted February 14, 2014 Share Posted February 14, 2014 Have seen low fuel pressure do some funny things on E-Tech engines, Ck fuel pressure or pull the supply pump and see if fiber gear is slipping. Quote Link to comment Share on other sites More sharing options...
mechanico Posted February 14, 2014 Author Share Posted February 14, 2014 Yes all are pumping fuel Quote Link to comment Share on other sites More sharing options...
mechanico Posted February 14, 2014 Author Share Posted February 14, 2014 Problem is im getting unburned fuel going out stack like the 3 are out of time. Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted February 14, 2014 Share Posted February 14, 2014 read the codes if any Quote glenn akers Link to comment Share on other sites More sharing options...
mechanico Posted February 18, 2014 Author Share Posted February 18, 2014 No codes. Checked continuity between wires from first 3 eups. With ecm unplugged. Have continuity between 2 and 3 also from number 1 Quote Link to comment Share on other sites More sharing options...
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