My Jaguar has 120,000 miles on it. The diagnostic tool showed that cylinders 4 and 5 were bad. Of course, the special tool didn't work. I used a large slide hammer, but it didn't work either. I haven't tried breaking the head and using an extractor yet, but I'm not sure if it will actually come off, so I don't have the courage to do it. Before that, I'm going to heat the injector with a burner, which is dangerous, and then use a slide hammer to remove it. I'll remove any fuel that's stuck on it. Why do injectors get stuck? Carbon clogged? Rust from water? Metal expansion from heat? At worst, can I get it out by drilling a hole?

 

Injectors often stick because of carbon buildup on the combustion chamber end. That is why many owners spray a solvent like BG-44 into the intake periodically. <---this is a preventative measure, though

That said, have you tried repeatedly SOAKING the stuck injectors with a good penetrating oil, over several days? (NOT WD-40) Kroil or PB Blaster

PS: Alternately, soaking with Armor-All might do the trick.

GOOD LUCK!

 

Also it's not unusual for the injectors to take hundreds of hits with the slide hammer tool before they come out. Just the nature of the beast? Maybe you gave up too early?
Generally if your working on one side of the engine it's recommended to change all 3 injector's and all 3 plugs. There is so much labor involved and your right there anyway.

One possible explanation for stuck injectors is how the car was driven? My 2014 XJR is modified and I race and run it hard. When I did my injectors at 60K miles all 4 on each side came out by hand. No slide hammer needed. I just pulled up on the fuel rail and all 4 came out still attached to the fuel rail! The thought is if the car is run hard the carbon build up is minimal. Just a theory and we really don't know. But don't feel bad as I have seen people spend days getting them out.

Be sure and rotate the injectors by hand as that can help to release them. Some searches will bring up other methods people have tried including using an engine hoist!
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Interesting. Is it not sufficient to use these product just in your gas as an additive? Particularly if one did it from day one on a new car?

I've been trying to use Redline S1 quite regularly on my 2024 in light if the known buildup issues.

 

That's a very good question and I don't know?

I use Techron now and again along with BK44 with the hope that yes it will help with preventing or maybe even removing deposits but again I have no way of telling if it works or not?
My injectors did have carbon on the tips as all of them do.

Here is how one side came out. Again all 4 came out with the rail by hand. Yes I was VERY lucky on that!




You can have several different problems that stick the injectors into the head. The tips with carbon from the combustion process and the large section that is sitting in the head. If water and junk get on top of the injectors that can get them stuck. I used brass brushes in the large and small bores after the injectors were removed. Just thought it was needed and had an experienced Jaguar tech suggest the brass brushes.

Note I was only able to remove them all at once because I had removed the engine mount nuts and used a board under the oil pan to jack the engine up and tilt it a bit for better access. This was the key for me. Otherwise it was just so tight.
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To get Stuck injectors out there's a technique I've learned with a strap at the correct angle ,in my Video series will cover it

 

Thank you for your replies. I'm leaving the Frype alone because I still can't get the injectors out. I looked at the combustion chamber with an endoscope, but I didn't see any carbon buildup around the injectors.