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Glow-plug madness

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Old Nov 16, 2014 | 05:40 PM
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From: San Pablo
Angry Glow-plug madness

Just got my first Diesel 93 F250 XL non turbo. Had a hard starting problem. Found two burn plugs. Bought a set of glow plugs off eBay (maybe thats my problem). Still got the brief flash of the WTS light followed by clicking. Put a new glow plug controller on it. And the same problem.

The ohms on the plugs are .8
Omhs on the wires to the lead on controller are .2
I get 12volts on the big red wire with key off.
I get 12volts on the smaller ones next to it with key on. Whiles its clicking it drops to 11.9 then back to 12.44
The ground wire has been cleaned. I get 12volts when testing it to the positive. Strangely the resistance to the negative terminal is -7 ohms.

What do I check next?

 
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Old Nov 16, 2014 | 06:28 PM
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From: Mi'kma'ki
Originally Posted by DJBess
Just got my first Diesel 93 F250 XL non turbo. Had a hard starting problem. Found two burn plugs. Bought a set of glow plugs off eBay (maybe thats my problem).

The ohms on the plugs are .8
Originally Posted by Dave Sponaugle
Optimal resistance is .5 to 1 ohm per glow plug.
you want motorcraft gp's only.
follow these tests to test the whole system:
https://www.ford-trucks.com/forums/1...l#post12967785
 
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Old Nov 16, 2014 | 06:32 PM
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I put one of he old plugs in just for kicks. And I got a longer WTS before the clicking cycle. I pulled out a couple more plugs and discovered after the slighter longer burn the resistance is 1.3. So put all the old back (ac deco) that were good and I only have 3 eBay nonames and the wts goes for about 6 seconds then starts the clicking cycle. Heading to Orileys now to get some motocrafts.
 
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Old Nov 16, 2014 | 11:06 PM
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That did it. Wish I had of bought those instead of the cheapest ones from eBay. Also didn't have to get a new controller.
 
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Old Nov 16, 2014 | 11:15 PM
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From: Mi'kma'ki
good learning experience though.now you know to research and ask here first before buying anything.this way we can help ya diagnose things and what to buy for parts and what parts most of use learned to stay away from.
nothing beats a quick easy starting cold diesel in the morning.congrats.
 
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Old Nov 16, 2014 | 11:17 PM
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One of my return lines are seeping. Whats a good kit to buy?
 
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Old Nov 16, 2014 | 11:19 PM
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From: Mi'kma'ki
https://www.ford-trucks.com/forums/1...-line-kit.html
 
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