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1994.5 - 1997 7.3L Power Stroke Diesel  

Glow plug lengths?

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Old Mar 17, 2008 | 06:42 PM
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Glow plug lengths?

I have 2 trucks that need glow plugs.
A 1993 Turbo Diesel and a 1994 Powerstroke.
I ordered glow plugs from 2 diffrent places on Ebay.
I just ordered for a 7.3 not by the year.
I got 2 diffrent lenghth glowplugs.
1 set is 5 inches long and 1 set is 3 inches long?
Does it matter ?
Both sellers had pretty good feedback.
 
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Old Mar 17, 2008 | 06:44 PM
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yes the 93 and 94 PSD use different GP's. the PSD uses zd-11 and the 93 IDI uses zd-9
 
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Old Mar 17, 2008 | 06:57 PM
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Well I wonder which ones are wrong?
The both advertise for a 7.3
 
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Old Mar 17, 2008 | 07:00 PM
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One ad states 95-02 but I asked him about if they fit a 94 and he said yes as long as it was a PSD?
 
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Old Mar 17, 2008 | 07:13 PM
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The PSD actually runs from 94.5 to 03. But the IDI engines do take different GP's than the PSD.
 
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Old Mar 17, 2008 | 07:30 PM
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So has anyone ever seen 5 inch long glowplugs?
Does it matter if they are longer ?
The other ones are Champion and are short?
Im thinking using the short ones for the 93 and the long ones for the 94!
 
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Old Mar 17, 2008 | 07:32 PM
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I just got a answer from the seller of the long ones and he says they are right for the 94 Powerstroke.
 
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Old Mar 17, 2008 | 07:43 PM
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yes the longer ones are for the PSD. If they are not motorcraft I wouldn't use them.
 
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Old Mar 17, 2008 | 07:45 PM
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Originally Posted by tjbeggs
yes the longer ones are for the PSD. If they are not motorcraft I wouldn't use them.
AMEN brother!

Ed
 
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Old Mar 17, 2008 | 08:21 PM
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Why not use them?
They are guaranteed for a year?
 
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Old Mar 17, 2008 | 08:34 PM
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Originally Posted by Vinford
Why not use them?
They are guaranteed for a year?
The problem with some GP's other than Motorcraft/Beru is that the tip swell. SO when they go bad and you go to remove them they get stuck in the head and break. Then about the only way to get them out is to pull the head and get it out. Not a good situation!
 
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Old Mar 17, 2008 | 08:36 PM
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I see.....................................
 
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Old Mar 18, 2008 | 12:52 PM
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When changing the glow plugs do you remove the valve cover gasket and wiring for more room?
I was going to do that and I unclipped one wire going to the injector and it didnt pull right out so I quit pulling?
It felt almost like it was spring loaded?
But it would sure be easier if that wasnt there?
 
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Old Mar 18, 2008 | 01:10 PM
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No need to remove anything other than the valve cover and unplug the glow plug connector. Use a 10mm deep socket to loosen the GP then use a hose to spin them off, or if you have small fingers use them instead.
 
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Old Mar 18, 2008 | 01:36 PM
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Originally Posted by 84-250
No need to remove anything other than the valve cover and unplug the glow plug connector. Use a 10mm deep socket to loosen the GP then use a hose to spin them off, or if you have small fingers use them instead.
Thats how I was doing it , but Im having trouble getting plug wire back on .
I just spent 20 minuters getting the last one on.
 
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