Another glow plug question
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Another glow plug question
Hi all,
I have been reading forums and articles for days now on GP's but I still have questions. I have a 1990 F250 7.3l IDI, having hard starting issues.
1. Where is the glowplug controller and/or relay located? I thought they were on a valve cover but not on mine.
2. My Wait To Start light comes on for just a couple seconds, then I hear a rapid clicking with the key on. Will just one bad glowplug cause that?
3. I tested my glowplugs by removing each one and using jumper cables to make them glow. One did not work at all, one heated up really slow from the center, the other six heated up pretty quick from the tips. I think I'll replace the two, or should I do them all?
Thanks in advance for any help,
Colby.
I have been reading forums and articles for days now on GP's but I still have questions. I have a 1990 F250 7.3l IDI, having hard starting issues.
1. Where is the glowplug controller and/or relay located? I thought they were on a valve cover but not on mine.
2. My Wait To Start light comes on for just a couple seconds, then I hear a rapid clicking with the key on. Will just one bad glowplug cause that?
3. I tested my glowplugs by removing each one and using jumper cables to make them glow. One did not work at all, one heated up really slow from the center, the other six heated up pretty quick from the tips. I think I'll replace the two, or should I do them all?
Thanks in advance for any help,
Colby.
Senior User
Joined: Dec 2011
Posts: 484
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From: Rockland Ontario
It should be at the "center, back of engine", near the firewall.
If their not "motorcraft", and you already have them out, I'd change them.
It has been said that "faulty" plugs will cause this noise.
If their not "motorcraft", and you already have them out, I'd change them.
It has been said that "faulty" plugs will cause this noise.
Lead Driver
Joined: Feb 2002
Posts: 7,955
Likes: 591
From: Greater Austin, Texas
This should tell you all you need to know about glow plugs:
https://www.ford-trucks.com/forums/9...le-system.html
It's at the top of the forum labeled "Read First" because this comes up about every 10 minutes or so around here.
https://www.ford-trucks.com/forums/9...le-system.html
It's at the top of the forum labeled "Read First" because this comes up about every 10 minutes or so around here.
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Well I changed the 2 bad glow plugs, and it seems to be working perfectly. The WTS light came on for about 10 seconds, no clicking, and she fired right up. Thanks for your input, I will probably have more questions!
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