Mack Technician Posted September 19, 2019 Share Posted September 19, 2019 High five man! Hope it stays clean out on the road! Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-432458 Share on other sites More sharing options...
Mack Technician Posted September 19, 2019 Share Posted September 19, 2019 The rough idle was also a campaign, it was fixed by adjusting the fuel pressure with an updated regulator fitting. Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-432463 Share on other sites More sharing options...
DBGraves Posted September 19, 2019 Author Share Posted September 19, 2019 Thank you sir couldn’t have done it with out you. Where is this fitting located? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-432466 Share on other sites More sharing options...
Mack Technician Posted September 19, 2019 Share Posted September 19, 2019 Let me see if I can locate the campaign Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-432467 Share on other sites More sharing options...
fjh Posted September 20, 2019 Share Posted September 20, 2019 If we’re talking the same issue here ? On older trucks We used to move inlet temp to the outlet pipe of the after cooler wonder if that is an option! Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-432482 Share on other sites More sharing options...
Mack Technician Posted September 20, 2019 Share Posted September 20, 2019 8 hours ago, fjh said: If we’re talking the same issue here ? On older trucks We used to move inlet temp to the outlet pipe of the after cooler wonder if that is an option! Physical redesign for the fuel gallery pressure regulator fitting. They used a pressure change to smoothen idle issues. Recall the visual identification for product improvement? I don’t see that bulletin..... He could hold a new regulator up to the old one and tell if it's updated, but I'd rather find the literature. Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-432493 Share on other sites More sharing options...
DBGraves Posted November 18, 2019 Author Share Posted November 18, 2019 Update on the truck. I took it to my Mack shop it turned out to be the guy that rebuilt the motor put a junkyard jakebrake housing on the high side. So it had not had the update spring kit installed. So the high side was hung open slightly and that’s why the motor was doing what is was doing. Now it’s all fixed it runs like a top and pull’s like no other. Just wanted to update everyone for the knowledge also thanks for you guys and your advice and knowledge it’s what makes this place so helpful. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-436153 Share on other sites More sharing options...
DBGraves Posted November 18, 2019 Author Share Posted November 18, 2019 2 Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-436154 Share on other sites More sharing options...
terry Posted November 18, 2019 Share Posted November 18, 2019 Quite the box there, what do you haul with it? terry Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-436174 Share on other sites More sharing options...
DBGraves Posted November 19, 2019 Author Share Posted November 19, 2019 Thanks I haul Gravel, Dirt mostly sometimes asphalt Quote Link to comment https://www.bigmacktrucks.com/topic/59008-99-e7-e-tech-400-missing-and-white-smoke-between-800-to-1000-rpm/page/2/#findComment-436218 Share on other sites More sharing options...
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