Glow Plugs Instant Burnout - Diesel Forum - TheDieselStop.com
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post #1 of 7 (permalink) Old 02-03-2013, 11:21 PM Thread Starter
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Glow Plugs Instant Burnout

Hello All,
I am at a loss to finding out this issue.

I have a 1993 E-350 Diesel IDI

I put in three different sets of glow plugs
Replaced 3 controllers
Made a new harness
Installed new injectors (the old ones were leaking oil)
Ran a new dedicated ground to the block near the GPR


and I am still blowing glow plugs every time just after one run
It blows the whole set too.

The controller is self controlled meaning nothing controls this other than the relay unit itself which was replaced three times.

The glow plugs themselvs come out with no pitting or damaged other then an internal failure and no longer work......Could this be a voltage issue (alt putting out too much)? Could Napa be giving me the wrong controller? Then I first install the new controller and GP set it works perfect as described. Goes on for about 20 seconds and then cycles while the engine is running for up to 2 minutes then goes off.
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post #2 of 7 (permalink) Old 02-04-2013, 03:21 PM
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What brand glow plugs are you running?

Alvin Mitchell
Pablo Montana
1983 F250 4X4 4.10 gears 4 speed dana 50 center/44 outers Dana 70 rear
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post #3 of 7 (permalink) Old 02-04-2013, 03:38 PM
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your controller has a resistor on it, right? I wonder if it's being bypassed, so too much voltage is reaching the plugs.

1992 F250 XLT 4x4 Super Cab 7.3 IDI E40D 3.55 ATS 088 4"R.C 360k
1982 MBZ 300SD W126 California model w/Sunroof, no EGR
1997 Audi A8 Quattro 225k Warm/Cold packages
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post #4 of 7 (permalink) Old 02-04-2013, 05:52 PM
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If he bought what Napa typically has on shelves it is the autolite plugs and they do burn out after about 5 seconds on these, even with the resistor.

Alvin Mitchell
Pablo Montana
1983 F250 4X4 4.10 gears 4 speed dana 50 center/44 outers Dana 70 rear
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post #5 of 7 (permalink) Old 02-04-2013, 06:12 PM
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do u have a picture of how its wired up? maybe one of the wieres is hooked up wrong

Work truck: 90 Pete 379, cat 3406B turned up
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personal: Late 92 f 250 xlt ext cab 7.3 idi 4x4 5 speed(converted to f 350)
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post #6 of 7 (permalink) Old 02-04-2013, 06:37 PM Thread Starter
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trial and error

thanks all for the help... i will try to post a picture if I can

the plugs i have tried is
autolight
champanion
bosch
all in sets

i find it hard to beleive it would blow all 8 even though i'm told they are of crappy quality except bosch seems to be ok.....especially after only once.

i just picked up wellman, and i am going to look at maybe the wiring was switched as suggested, this would bypass the resistor and cause too high of voltage which makes sense??.......maybe maybe lets cross our fingers. I will keep everyone posted.
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post #7 of 7 (permalink) Old 02-07-2013, 07:55 PM Thread Starter
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Cool stand corrected

So I stand corrected.......put the wellman plugs in an haven't had an issue since. Its so hard to believe all these manufactures put out so garbage and keep putting it out. Hopefully this will save someone else from not listening and go and get either the motocraft or wellmans
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