Just had a reman Jasper engine put in my 03 Trailblazer and it runs smooth, except when I turn the truck off, it diesels. Does anyone have any suggestions as to what could be causing it? Any help would be appreciated. Thank you.
We had all new fuel injectors put in.Probably something with the fuel injection. When you turn the key off it cuts the fuel off. No fuel, no dieseling. Leaky injectors?
It's funny that since it's a new engine it does this. Dieseling requires a hot spot (carbon) in the cylinder for ignition. Maybe some Seafoam?