Fuel Injector stuck in Head - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 06-22-2013, 11:37 AM Thread Starter
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Fuel Injector stuck in Head

I am in the middle of a head gasket repair, and have gotten the passenger side head torn completely down, except for one thing, the #7 injector is stuck in the head. I've got the hold-down screw loose, and the hold down block itself will wiggle around, but the injector itself acts like it is frozen in the head.

Anyone else have this? Any tricks to get it out?

Thanks
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post #2 of 11 Old 06-22-2013, 12:10 PM
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One of my injectors didn't want to come out when i was doing it either, is it moving around or does it feel jammed in? Did you try pulling the bolt and hold down out?
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post #3 of 11 Old 06-22-2013, 01:59 PM Thread Starter
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The bolt doesn't seems to want to come all of the way out. The injector definitely feels frozen or jammed into the cup. How did you get yours out?

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post #4 of 11 Old 06-22-2013, 02:22 PM
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Make sure that you thread the hold down ALL THE WAY out.

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post #5 of 11 Old 06-22-2013, 02:23 PM
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Had this happen on a few customer vehicles. If you have another stick to put in then you could do it this way. I broke the electrical off of the injector and used a wrecnch that fits over the top of the injector where the electrical harness is. Then using the wrench twist the injector back and forth and using a small pry bar pry up gently. It will come out. I have done this a few times now. All were in the truck with the cab on and the first one was on a F450 and it was cyl7. It will take some time but will come out.



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post #6 of 11 Old 06-22-2013, 06:41 PM Thread Starter
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Thanks for the suggestions. I played with it some more tonight, and it's still stuck. I looked at the other hold-downs from the injectors that did come out and found that it looks like there is a ball on the bolt that forces the hold-down up as the bolt is backed off. Well apparently the injector is stuck so bad that this ball didn't work and the bolt backed right out through it. It sounds like to get this thing out I'm going to end up destroying the injector, which I hate to do because I think it was working okay.

I haven't taken the head off yet, but will be. Once the head is off, is there any way to nicely tap it out from the underside, maybe by tapping on the cup?

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post #7 of 11 Old 06-22-2013, 07:24 PM
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Yea thats a tough situation, when mine was stuck after we completely pulled the hold down out and it took some pressure off the injector it popped out.

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post #8 of 11 Old 06-23-2013, 07:01 PM Thread Starter
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Well I got the head off today, and the injector is still stuck in the head. Oh well, I'll let the boys at the machine shop play with it.

A strange thing happened while I was inspecting the heads, I found two tiny nuts sitting in the heads. I figured out that they go to the injectors, but here's the weird part, only one of the injectors was missing a nut. Really. I went through them at least five times, and only one was missing a nut. The only thing I can figure is that this came off of an injector that was replaced by the PO. I'm glad it didn't work its way into somewhere it wasn't supposed to!

One question for tonight, now that I got the heads off, I've started cleaning up the block where the heads mount. There is a lot of baked on carbon. I don't want to gouge the surface with a razor, or make low spots with a sander. Has anyone found a good chemical that will remove this stuff? Right now I'm just using a green scrubby pad and some throttle body cleaner, but it will take me years at this rate.

Thanks

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Banks Six-Gun with PowerPDA (For gauges only)
EGR Delete from IPR
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post #9 of 11 Old 06-25-2013, 08:42 PM
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those nuts had to be from a ****ty prior repair.
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post #10 of 11 Old 06-25-2013, 10:44 PM
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The nuts were from the spool valves on the injector. Each injector has 2 4mm nuts on the spool valve bolt.

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