Reman injector won't fire - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 01-20-2014, 07:02 AM Thread Starter
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Reman injector won't fire

I have a reman injector that will not fire. I have tested absolutely everything short of tearing the injector apart. No oil comes out, no fuel comes out. Electrically the truck is perfect. I swapped idms with a known good one an nothing. This is the 6th one i've replaced and of course it's my fault or the trucks fault. Now before i replaced all 8 of these the only problem the truck had was cold starting. Since nov 1 i have replaced 6 of these. The last one i replaced was one that had a compressionwqsher go bad and blew out, the inj worked but was nasty. So i replaced that inj with a clean one from the remanufacturer and now it's not working. What would make it not work? Is there anything I can do to make it work?
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post #2 of 9 Old 01-20-2014, 09:42 PM
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well first off is your uvch bad

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post #3 of 9 Old 01-20-2014, 09:55 PM
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what he said^^^^^

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post #4 of 9 Old 01-20-2014, 10:44 PM Thread Starter
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No sir every thing that is or could be electrical is absolutely perfect. All electronics have been cleared it does not fire. If i idle it i unplug it no change plug it in no change. Pull it out and the tip is still very clean. No oil flow at all through deflector. Did not pass buzz test did pass contribution test. I can operate it on the system you here it click but very very faint. The others sound like bees this one sounds like spanish fly. Anything electronic is working 100% or better i even did the idm mod and everything that works is working very nicely. The injector i pulled out that was muffed up worked but needed cleaned so we swapped em and within 3 hrs of pulling the new one was in and nothing. The light i didn't have i now have. All oil and fuel pressures are perfect new icp and ipr, hpop was cleaned of all debris as was the fuel system in both heads.

So internally what could cause and injector to fail? It's reman never been used. Could the magnet be junk? Could the poppit valve be stuck? Could the plunger be stuck? But if i'm not moving oil i'm not moving fuel. Sooooo?
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post #5 of 9 Old 01-20-2014, 10:56 PM
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If you take the 4 solenoid screws out of the top of that injector there is an armature plate that is about 1/4" thick that is held down with an odd screw. That plate needs to be tight or the injector won't work.

I had a loose one on one of my injectors that I tightened down with purple locktite and needle nose pliers.

It's worth a look. Also test that solenoid for resistance while it's out. I think 1.8 ohms is about right. You should also test that solenoid back through to the main idm harness. If you've replaced the uvch, that might be wired wrong from the factory too.
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post #6 of 9 Old 01-21-2014, 05:43 AM Thread Starter
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Plate was tight, my thought is magnet.
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post #7 of 9 Old 01-21-2014, 04:58 PM Thread Starter
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Is it possible to hurt the magnet on install? Like hitting to hard?
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post #8 of 9 Old 01-21-2014, 08:39 PM
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i think if you damaged it, it would be visible. did you do a resistance check on that solenoid?
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post #9 of 9 Old 01-21-2014, 08:58 PM Thread Starter
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Well its a weird little setup inside em and a hard enough hit might dislodge something muy importante. Yea i tested it but i dont remember what the ohms were i think it was in spec if i remember. But its been a few days.

Last edited by Dzlnzl; 01-21-2014 at 09:00 PM. Reason: Potato
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