× 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: screech like a Ford 3.0 but it's a 7.3
Posted to HD/Fleet Forum on 3/24/2018

Brad,

I've had several GM engines that made a similar noise, turned out to be the front crankshaft seal.

Not sure about 7.3 Fords but it might be worth putting a puller on the front balancer/pulley and pulling it out just a bit, then running the engine to ... Login to read more.