× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: LB7 Duramax no start
Posted to HD/Fleet Forum on 5/28/2020

I agree with Henry. I’m sure it takes more pressure to start. These trucks suck fuel from the main high pressure pump only. No lift pump. Could it have air leak between ficm and cp pump? Vacuum is in range but if it’s pulling air vac won’t be accurate anyway. ... Login to read more.