Easy and Complete Glow Plug Test 

Latest testing video with more demonstrations ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lsuP1QkKcXU.html

Spot-on tutorial! Videos like this, are what make RU-vid such an excellent facility. Straight to the point, clear, concise; no unnecessary graphics or annoying background music; no lengthy introduction; just the useful content. Thank you so much for this post.

Even after 7 years, your video is still helping us! Much appreciation!

at last someone who knows what they are talking about, thank you for your help, all 4 of my glow plugs where shot

Excellent video. I knew one of my plugs was failing, but didn't know which one. Three showed a reading of 1 ohmn and the duff plug showed 304 ohmns. I replaced all 4 plugs anyway and no more warning lights on my dash. Thanks very much. This has taught me a few things about glow plug operation and testing.

Excellent video. I'm not that great with multi meters but I tested all of my glow plugs and found the faulty one and even checked the new one at the shop. Thank you.

Very nice and informative video.I am not a car mechanic and i dont even have a diesel car,but it gives me ideas about how these heaters could be used in a soldering iron making.

Thank you, great advices. Multimeter test showed 2 faulty ones and battery test confirmed it. Thank you for your help !!!

VERY GOOD AND USEFUL VIDEO! THANKS! can't wait to test my old glow plugs!

Very good video. Thanks for taking the time to making and upload. Really helpful!

Excellent demonstration. Thanks

Thanx Sir Robb, for you informative video on checking glow plugs!!

Cheers SiRobb, good video, tried this on the Combo 1.7D.. Worked.. will be using this Test from now on.... Thumbs Up..

very useful demonstration. Thank you

Concise and clear. Super demo

best described video on youtube for this.thank you

Outstanding video Lord Rob

Brilliant and very helpful video , thank you for posting.

Hats off to you man for dealing with all the supposed "electricians" comments as calmly as you did! Think I would have went STFO! Thanks for the video. Helped me out.

Great test. Clearly explained topic in the video.

Very good video!Thank You!

This is the best demonstration I've seen on testing glow plug. Easy to do and low tech. Thanks for this.

Thanks, this was an easy way to check, and saved me buying new ones.

Perfect video, informative very clear and quick to watch. Many thanks for taking the time to do this

awesome help. Thankyou! appreciate it

Really helpful and conclusive check - will help make sure I can check glow plugs myself before paying for more help

I like the way you have shown this test. It shows how they work and is very informative. Well done.

Hey thanks for this video. I used it to help test glow plug on my mk7 VW golf. Really helpful!

Good video man, clear and to the point.

Nice clear easy vid. Step by step well done. subbed.

Thanks so much for this !

Very interesting and educational video, I did not know that they were supposed to be close to zero Ohms and where to measure. Great job

Excellent video really helpful thanks my friend

Really useful - thanks. Off to test...

Very nice, thanks!

Thanks! Very helpful

thank you very much it was very helpful

Very helpful thank you

thank you indeed grate Explanation

Thank you, very helpful.

Brilliant info! Thank you :-)

Thanks for this. Got a code up on the Mrs Juke for glow plugs so I'll be able to check which one is gone before I change it. I'll check the resistance of a new one to compare against. Thanks.

Thanks for the video

very helpful video, thanks a lot

Excellent video thank you

Great vid, thumbs up and subbing. I have a 1.9 Vauxhall Vivaro glow plug light coming on while driving + limp mode, very low on power. I am looking at EGR maybe needing a clean, maybe the MAF sensor, but thought it would be a good idea to check the glow plugs while I have access. With your method I reckon I will save an hour of unnecessary labour, if all the plugs test ok. Thanks for sharing tips, and thumbs up from another Volvo fan.

Thank you...just looking how to test the ones in my Landrover 200 engine.

Perfect. Thank you very much.

thank you very informative

Thanks for this useful instruction

Thank you bro

very nice video. thank you

super n great job thank you

nice one thanks for that

well explained thanks...if in doubt...wouldnt just chuck a whole new set in..??

thank you!!

Spot on cheers 👌🏻

ta for that really clear explanation and demonstration

Cheers for this, can I assume this ohms reading procedure can be done with the glow plugs in situ? not the heat- up of course

great vedio thx mate

Very straight forward demo. No bullshit, no faff just as it should be to the point and helpful thanks.

Hi, great video. I'm having a problem with cold start and will use this information to go and test the glow plugs now! :)

thanks friend, this helps...God bless...doug

thanks

Great video... now out to my Chinese tractor to give it a go... thanks from Oregon

Thank you for this post. For glow plug wiring, is it directly from car's battary?

Brill Vid!

Can glow plugs be made out of titanium? Are they graphite or iron?

Good afternoon sir thank you

If the plugs are still in the car you could use your multimeter in continuity resistance with one lead on the top and one on a common ground eg the cylinder head would show wether the glow plug is good without removing the plug you could also use a power probe by listening for the ground chime

Cheers mate

On the 406 you can't get a regular socket on as their is no room for the ratchet to plug into it as the thread is too long. You also can't get in a long socket. So I found cutting the thread off the old plug will get on the standard socket to remove the plug. Then on the new plug cut off half the thread and you can get that in too with plenty left to screw on the cable nut.

Where you get the Glow plug

Good

Why are you not on my suggestion list U sir are a diamond geezer

Those ceramic glow plugs quickly get up to 1550C and then module control brings them down to 1100C; I would avoid too much time with an 11V battery source with the newest ceramic plugs according to Bosch. Regular metal tip or super metal tips g plugs are something like 750C temp also with intended 11V source. I think your vid is super. I have the 5 cylnder 2.7L. The old 180D plugs were the better shade tree fix. My father said he used to have a cylinder head glow bolt that one would remove; heat with an oil lap til hot and quickly install with gloves and start cranking. Plugs have come a long way.

The multi metre reading 1, I think the plug is open and that is no resistance.

Such a good demonstration. Just notice the fingers touches the metal part of glow plug wherein the test probes are connected. Technically our body might contribute inaccurate resistance measurement. Just an observation.

Thank you for sharing, Can you get an accurate reading from testing the plugs in the engine or should take them out? I have a Toyota D4D that is blowing white smoke from cold and suspect the plugs.

super

Hi my volvo v50 2.0d is struggling to start but my battery is fine, is it a big job to change these and this cropped up as being one of the potential problems? Thanks nice vidoes 🙌🏼

Great video. Those who disagree should go back to school. :p

PS: From Vida for 2008 models: "Caution! The glow plugs must not be directly connected to 12 V. This would destroy them immediately." The glow plug system is a Quick glow-system. It is based on 4.4 V."

cheers for this. I have a Honda CRV 2011 I am going to check mine while screwed in. Do I have to disconnect the battery?

Glow plugs typically draw about 10A each so the very quick and easy way to check is stick a DC clamp meter over the glow plug feed cable and see if 4 plugs draw ~40A, 6 plugs ~60A etc. But even then I've seen plugs fail in a way you can't spot with this test or by metering for resistance, because they glow but up in the body of the plug and not the tip, so really pulling them and sticking them across a battery as shown in the video is the only 100% reliable way :)

Great video. With 4 out of 5 plugs gone how did you start the Volvo D5 engine? Roll start every time?

Great video bud ive heard about glow plugs snapping off when people try to remove them is there a way to remove them that reduces the chance you know of ? Thanks

Ottima spiegazione

When you are battery testing them it's much easier to use jumper cables (one lead of the around the body of glow plug to ground) then take the glowplug via the handle and touch the positive thermal of battery with top of glow plug. No chances of that Lil wire getting hot and burning your finger. 👍🏾

would a quick test be to just chuck it on a car battery and if it lights up within 10 seconds...its good..??...if not replace it..??

Hello. Thank you very much for your video. One question please: I need to change them. But I can buy 4 glow plugs of 0,5 ohm-s or 1 ohm-s. Which one is better??? 1 ohm??? 0,5 ohm??? These are cheaper, almost half price than the 1 ohm-s. Thank you very much. Have a nice day.

very useful thanks btw how much are these glow plugs?

Sirobb. Could you please tell me where the location of the glow plugs relais(relay) and fuse. Thanks a lot in advance.

Hi, this is very usefull information for people, to spare themselves for canging glow plugs hen there is actually no need to do this as they are all fine. I had been testing my glow plugs like this for last 3 years before every winter to make sure they are all ok. On one of my cars they did not regiter any resistance on up to 200Ohms and they did not light up either when connected straight to the battery. New ones showed about 0.6ohms (NGK). Now, just today, i have new set of Denso glow plugs in my hands which show about 0,5ohms. Anyway, main idea is that, under 1ohm and they should work and they do when u apply voltage direct. But be careful with plugs that work on 7V(newer cars with ceramic glow plugs), 12.5V direct from car battery could kill them. Only question to the video owner/maker: about testing the second glow plug, did i saw tip of the wire lead used to test just flying around i.e it lost connection to battery or something before plug could even react - would of expect to see if any result after being connected about 10 sec rather than 3 or 4 u filmed this one.

Dear Sir, can you share any info on Glow plug removal and replacement please??? I have glow plug warning light coming on ! I have a merc 220CDI 1999 It comes of for some minutes then goes off when I think the car is warm, Any advice or ideas please? Thanks Ian

Do you recommend to change the complete set of an engine or just the defected ones

All my glowplugs are 1.5 to 2 ohms, and i have a bad cold start. Tested the relay and even if they get 12v, and everything was ok. Going to change them soon and see what happens. I had bad starts for years with good, bad turbos. Havent checked the injectors, but lets start at the cheapest end . At 250k km and they never have been changed only time.

Is this test apply for the all type glow plug?

Great post. Will faulty glow plugs prevent car to start in warm weather?

agree with all of this, all i would add is run then for 20 seconds off a battery, and see they stay lit as sometimes the internal winding in then can 'open' when it gets hot so they kind of light and then go out again. the resistance test is a bit hard for most people as they things can read so low its hard for a cheap meter, just power then up, check they glow withing 3 seonds and stay lit for more than 20, and slap em back in if good, although once you have them out, for the sake of what they cost, why not just stick new ones in, and NO CHEAP BRANDS! i bought cheap and lasted only 3 month....