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Finally tackled a sticky injector on a 7.3 Powerstroke by myself
Been chasing a rough idle for weeks on my 2002 F-250. Took it to a shop and they wanted $800 just to diagnose it. Watched about a dozen Youtube videos and decided to try pulling the injectors myself last weekend. The number 8 cylinder was carboned up bad but I got it out without snapping anything. Has anyone else had luck with ATF and acetone mix for freeing up stuck injectors?
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william_craig73mo ago
Gotta laugh at myself here because I just spent 4 hours cussing at a seized injector in my driveway before remembering I left my impact in the truck bed the whole time, so thanks @kimr91 for the warning about that mix cause I was about to grab the ATF next. You try the brake cleaner and brush route yet or are you still soaking it?
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kim_davis3mo ago
Hold up before you dump ATF and acetone in there. Honestly that mix can eat up the o-rings and make a bigger mess than you started with. I've seen guys do that and end up with a hydro locked engine cause the seals swelled and blocked the return paths. Tbh a good penetrating oil like Kroil or even just PB Blaster works way better and won't wreck your seals. Ngl if that number 8 was carboned up that bad you probably got fuel leak issues or a bad glow plug causing incomplete burn. I'd focus on cleaning the bore with a brass brush and brake cleaner instead of risking that solvent cocktail.
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kimr913mo ago
Buddy of mine tried the ATF and acetone mix on his old Powerstroke. Ended up with o-rings so swollen he had to pull the injectors just to get the thing to turn over. Cost him a weekend and a whole lot of cussing to fix what started as a simple carbon cleanup.
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