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Author Topic: Testing Glow Plugs  (Read 5092 times)

Offline Alhambra King

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Testing Glow Plugs
« on: February 20, 2012, 12:18:13 pm »
Hi boys and girls. Must be the season for glowplug problems as my alhambra is really struggling to start these days. shes done 120K miles on an 05 plate and the plugs have never been replaced. I know I should just replace the set but I'd like to know they are properly dead before just replacing them. How do i test them? I read another post about measuring resistance but I'm a bit of a noob when it come to that so some pictures would be good

Offline Chrispb

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Re: Testing Glow Plugs
« Reply #1 on: February 20, 2012, 03:55:55 pm »
Seeing if a glow plug is open circuit (dead) with them still in the car, remove the linked connector, now you can use a multi meter set on ohms or resistance set to 200  you should get a reading of 1.0 to 1.5 on a good plug or you could use a simple test bulb with two wires, connect one lead to battery + terminal the other to the glow plug, if the lamp lights the plug is working.
This is a basic test but doesn't show you if the plug is heating correctly to do this you would need to remove them.
On this link there is a short video showing a plug removed and 12 volt directly connected, that's how the plug should look glowing from tip back, if it starts glowing in the middle or if the tips distorted then replacement is needed.
http://www.carparts-direct.co.uk/parts-catalogue/diesel-glow-plugs
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Offline Mirez

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Re: Testing Glow Plugs
« Reply #2 on: February 20, 2012, 09:18:10 pm »
There will be a how-to test post in the reference library by the end of the week if you still need help :)
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Offline Alhambra King

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Re: Testing Glow Plugs
« Reply #3 on: February 21, 2012, 06:27:21 pm »
That would be awesome thanks!
Chris do you think I should just replace the set then anyway?

Offline Mirez

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Re: Testing Glow Plugs
« Reply #4 on: February 22, 2012, 08:36:40 pm »
See here: https://www.fordmpv.com/smf2/reference-library/galaxy-diesel-glow-plug-testing-and-measuring/

Personally, at 120K I would change them regardless if they've never been done just for piece of mind that they aren't the culprit.
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With cream leather interior, Full Bodykit, Remapped at 145bhp, Lowered on 18's
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With retrofitted everything except another slidey door! :)

LAUNCH X431 Pad PRO - Scanning & Coding for all makes and models done in Wiltshire in exchange for winegums! :)

 

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