If you can remove the studs from the injector hold down you will get more movement when tapping on the injector. Try to double nut the stud and turn the bottom nut to remove it. If its stuck don't force it or you will have a broken stud to remove as well. It is not only the rust you are dealing with but possibly a build up of carbon on the injector tip. Keep lubeing, tapping and some heat. The best tool that I have used is a heel bar and the hit the bar to shock load the injector loose. (don’t forget to wear safety
glasses). If you get the studs out don’t turn the injector to far anticlockwise or you could leave the lower part of the injector (nozzle and cap) in the hole. Usually with an injector stuck as tight as yours spinning the engine
wont help. Use caution using your torch and having a fire extinguisher close by is a good idea. Diesel
won't ignite like gasoline/petrol. Diesel needs to be atomized (sprayed) to ignite. You may get a small flame from the injector line. It is flammable, using a torch you will have small flames and smoke. The lube you are soaking the injector with is more flammable than diesel. If this doesn't work find a fuel
injection repair shop in your area and ask their advise.
Good luck, Ozzie.
Originally Posted by Dynamo1181
Keep tapping in all directions + keep adding the PB Blaster. Try heating the Head around the injector with a torch...not too hot; then apply more Blaster and keep tapping.