Diesel around glowplug - Ford Powerstroke Diesel Forum
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Old 12-10-2010, 04:52 PM
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Question Diesel around glowplug

Well title says it all I have a 1994 7.3 IDI n/a that has diesel coming up from around the glow plug and I really don't know why its doing it. I've tried to tighten the gp but its as tight as it should be and it won't turn any further. This is on the front driver side gp, can yall help me out with what it might be or if any of yall have come across this before.
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Old 12-10-2010, 05:03 PM
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It probably leaking from the injector return line, or o rings. and down. check the return lines and o rings. i just replaced some o rings on mine
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Old 12-10-2010, 05:21 PM
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It's not coming from the return lines ... I've had some one fire up the truck and I watched as diesel started seeping from around the gp it looks exactly like when u dunk a tire in a water pool to find a pin hole leak .... it bubbles up from around the gp
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Old 12-10-2010, 05:29 PM
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WTF.
Take the GP out and check the threads.
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Old 12-10-2010, 05:34 PM
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Ha ha Wtf is right and yea I'm gonna pull the gp out but I mean I'm trying to see if anyone has had this jappen or know of this happening
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Old 12-13-2010, 02:13 AM
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I would pull the gp and disconnect the wire going to the injection pump and turn the motor over to what is coming out of that hole. There is no way diesel should be coming out of there.
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Old 12-21-2010, 08:48 PM
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First diesel is leaking down from the injector. Probably from the rubber line or an o-ring in the plastic fitting.
Then your getting air leaking up from around the glow plug. it's compression from the engine. The glow plug is not fully seating and sealing down in the hole. There's carbon from the cylinder built up in the bottom of the hole.
You will need to pull the glow plug out and scrape the carbon out of the bottom of the hole. I just had to do this with an injector and still have to do 2 glow plugs in my motor. And you need to install a return line kit to stop the fuel leak at the injectors. Sean

YMMV

Last edited by sak778; 12-21-2010 at 08:51 PM. Reason: I can't type or spell.
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