A stuck injector on a 6.7 Powerstroke turned my Friday into a three day weekend

The truck came in with a bad misfire, and after pulling the valve cover I found cylinder 3's injector was absolutely seized in the head. I ended up using a slide hammer and a homemade adapter from an old bolt, plus a full can of penetrating oil over two hours, just to get it to budge. What's your go-to method for a really stubborn diesel injector that won't come out?

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1 Comment

williams.amy2h agoMost Upvoted

A full can of penetrating oil and it still took two hours? That injector must have been welded in there by sheer spite. I've seen some stuck ones, but going through a whole can feels like a special kind of battle. My old boss used to swear by heating the area around it with a torch, just a little, before even trying the slide hammer. Said the metal needed to remember it could move.