PSA: A warm shop and a heat gun saved me from a stuck injector sleeve job

Had a 6.0 Powerstroke come in last week with a weeping injector sleeve. It was about 20 degrees outside and the shop was cold. I knew I was in for a fight trying to get the old sleeve out. Instead of just hammering away with the removal tool, I ran a space heater under the valve cover for a solid hour to get the aluminum head warm. Then I hit the sleeve itself with a heat gun on low for a few minutes. The old sleeve came out with maybe half the effort I was expecting. The new one went in smooth too. I think the cold metal was just holding everything too tight. Has anyone else found that a little heat makes a huge difference on these jobs, or was I just lucky this time?

3 comments

3 Comments

the_lucas2mo ago

Ever try this on a diesel in the summer too?

kareng272mo ago

My old boss in Wyoming would just soak the sleeve with penetrating oil overnight and it always came free. I've never needed a heat gun, even on cold mornings. Maybe some guys just overthink the process. Lucas has a point about summer diesels, does the heat trick even matter when the engine is already hot from running?

williams902mo ago

My shop in Michigan is always freezing in winter. I started warming the block with a torpedo heater before any sleeve work last year. It cuts the fight down by more than half every single time.