Longevity of Glow Plugs? - Ford Powerstroke Diesel Forum
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Old 01-20-2014, 03:30 AM
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Longevity of Glow Plugs?

I've replaced all of the glow plugs about a year ago, and replaced the wiring harness under the valve cover as well due to cold start issues. All worked well for a while. Now I'm having cold start issues again.
I checked the ohms on the harness last night, and 3 GP's are showing infinite resistance already.
Question: How long are GP's supposed to last? Is there a preferred brand of GP?

I intend to replace all GP's once again since I'm going to have to dive in there , I will check the connection on the wires just to be sure its connected well at the gp.
Suggestions?
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Old 01-20-2014, 04:19 AM
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I put in Autolite GPs. Do they have a poor reliability?
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Old 01-20-2014, 04:29 AM
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PUll those autolites out and return them.... use nothing but motorcraft ZD-11.

Autolites tend to swell and you run the risk of having to pull the head to remove them
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Old 01-20-2014, 05:38 AM
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Will do. ZD-11's will be installed today. Thank you!
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Old 01-20-2014, 02:49 PM
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Schultzer you must be a psychic. 7 out of 8 came out fine. The last one, ( drivers side rear one) literally unscrewed and came apart INSIDE of the cylinder. Now Ive got issues. Any chances to fish out the glow plug entrails? Maybe pull the injector and get it out through that access?
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Old 01-21-2014, 04:01 PM
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Head is off, missing half of Autolite GP located. Autolite sales rep was quite relieved there was no engine damage. Reassembly tomorrow.
My mechanic discovered 2 lots of gp's. one lot was "staked" to prevent them from unscrewing. The other lot was loctited together. The one gp that i had come apart didnt have any loctite on the threads and wasnt staked. Once this was pointed out to the rep he accepted responsibility for repairing it.
Im pretty happy about not having to get stuck with the bill.
Note to self: always always always check with this forum BEFORE replacing any parts on my PSD.
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Old 01-21-2014, 10:55 PM
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just replaced the original plugs on my dads 2000 f250, one went bad, they lasted about 13 years.
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