Can we talk about using a heat gun on a seized injector?

Everyone at the shop said to soak it in penetrant for days, but I was in a bind on a 6.7 Powerstroke last Thursday. I carefully heated the injector body with my Milwaukee heat gun for about 90 seconds, tapped it with a brass punch, and it came right out without a fight. Has anyone else had luck with controlled heat instead of just waiting?

3 comments

3 Comments

phoenix_martin402d ago

Milwaukee heat guns can hit 1000 degrees at the nozzle. You put that on an aluminum injector bore for a minute and a half? I'm amazed the injector itself didn't fuse to the head. That's not controlled heat, that's playing with a blowtorch.

hannah_wells2d ago

Honestly, that sounds like a recipe for a cracked head. A little heat is one thing, but a full heat gun for over a minute on an aluminum engine? You got lucky it didn't warp anything. Those things get way hotter than people realize.

rileyprice2d ago

Read a forum post where a guy warped his valve cover doing exactly that. Heat guns can hit over 1000 degrees if you're not careful. Aluminum doesn't need much to start changing shape.