Had a stubborn injector on a 6.7 Powerstroke that just would not budge

The truck came in last week with a bad miss, and number 3 injector was stuck tight. I tried the normal puller, then heat, then more pulling force, but it was not moving. Out of ideas, I grabbed a can of brake cleaner and sprayed it around the injector base to clean off any built up carbon. After letting it sit for about ten minutes, I gave the puller another crank and it came out smooth as butter. I think the cleaner got into the tiny space and broke up the carbon lock. Has anyone else had luck with this trick on other engines?

2 comments

2 Comments

jade_young888d ago

Feel your pain, man. Those stuck injectors are the worst.

fionarodriguez8d ago

Honestly, spraying brake cleaner near an injector sounds like a bad idea waiting to happen. That stuff can wreck seals and o-rings real fast. I get why @jade_young88 says they're the worst, but adding a harsh chemical seems like a quick fix that could cause a bigger leak down the road. A proper penetrating oil made for the job is way safer, even if it takes more time. I'd never risk it on a customer's engine.