Changed glow plugs now lopes and is gutless - Ford Powerstroke Diesel Forum

 
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post #1 of 6 Old 12-24-2012, 07:26 PM Thread Starter
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Changed glow plugs now lopes and is gutless

Changed glow plugs wondering what I could have bumped because now for some reason it seems like it's loping more and does not have as much poop almost like its only firing on 7? Going to take it apart tomorrow a take a look


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post #2 of 6 Old 12-24-2012, 11:18 PM
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My guess is you have a loose injector connection. Unplug the external UVCH connectors one at a time with engine running (there will be four in total, two per VC). Listen for the connector that sounds different from the rest. If you have a dead cylinder the change will not be as drastic as if both injectors are firing. Or if you have a scan tool, run a buzz test.
This will at save you from pulling both valve covers.

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post #3 of 6 Old 12-25-2012, 05:28 AM
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Did u change ur uvch i had the same problem when i did my gp and it was due to the wires under the valve cover being brittle. I had broke a wire goin to an injector. Changed out uvch and ran perfect again.



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post #4 of 6 Old 12-25-2012, 11:49 PM Thread Starter
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I will change the uvch tomorrow I didn't do it when I did the gp hopefully it works


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post #5 of 6 Old 12-26-2012, 12:17 AM
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Quote:
Originally Posted by backwoodsboy View Post
My guess is you have a loose injector connection. Unplug the external UVCH connectors one at a time with engine running (there will be four in total, two per VC). Listen for the connector that sounds different from the rest. If you have a dead cylinder the change will not be as drastic as if both injectors are firing. Or if you have a scan tool, run a buzz test.
This will at save you from pulling both valve covers.
Usually a good idea to replace those anyways, especially if they are original.

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post #6 of 6 Old 12-28-2012, 04:56 PM Thread Starter
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So I changed the valve cover gasket didn't help brought it to a shop and did the buzz test cyl 4 injector seems weak and by the looks of things this injector has been replaced before I took the injector solenoid off and doing that stripped one if the torx heads ( previous owner that had the truck must have cranked them to tight) so I took one size bigger and tapped it in with a Hammer doing this cracked one corner of the solenoid so Im in a bit of a pickle now


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