Easy and Complete Glow Plug Test

[@sirobb]

Latest testing video with more demonstrations kzbin.info/www/bejne/oqTYgWSHoLCWjrc

[@fattyballaty]

Spot-on tutorial! Videos like this, are what make KZbin 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.

[@sirobb]

.....and it's responses like yours that make the effort of making a video worthwhile. Thank you.

[@richardgreene3460]

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

[@MikeZak101]

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

[@Haka61276]

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

[@sirobb]

Thank you and you're welcome.

[@petetrout8691]

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.

[@paulkimber3887]

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.

[@accordioncafe]

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

[@sirobb]

Thank you for taking the time to comment.

[@kristupasvertelis5142]

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

[@jamesnoble4212]

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

[@sirobb]

Thank you. You're comment is much appreciated.

[@stevelewis5730]

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.

[@GeorgeGeorge-xj2bc]

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.

[@jeffhigh1611]

Great test. Clearly explained topic in the video.

[@ZezkaaHD]

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

[@jamiefenner123]

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

[@sirobb]

If the glow plug internals are shorted to ground, you'll get the same reading and it will be wrong. A resistance test comparing actual against spec is more reliable.

[@TheAgTeam]

Concise and clear. Super demo

[@dariunas]

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

[@vincentrolfe1384]

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.

[@sirobb]

Thank you for the little history lesson and kind words. Much appreciated. ☺ You're quite right about the on battery test but it was for illustration only and I do say that I've done that test so others don't have to. 👍 Thanks again.

[@supersesqui]

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

[@thesos5165]

Brilliant and very helpful video , thank you for posting.

[@jokebre]

Good video man, clear and to the point.

[@nickaxe771]

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

[@macadaims]

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

[@ttttonyyyy]

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 :)

[@merlin8166]

Outstanding video Lord Rob

[@darylcjackson]

Excellent demonstration. Thanks

[@OliverAllpress]

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

[@sparkyuiop]

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.

[@gunnarnystul]

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."

[@sirobb]

Yes I know and that is why I don't recommend connecting directly to the battery.

[@ksauto1]

I have an even easier and much quicker way. take a test light and connect the clamp to battery positive, then just touch the light to the end of the glow plug, the light should light up bright. when you have a dead plug it will not light up, if it is failing-hi resistance-the light will glow dim.

[@sirobb]

That's good. Whatever works for you. I would say to a complete amateur though that if you don't own a test light or a multimeter, buy a multimeter first because it has many more uses.

[@ksauto1]

sirobb Maybe, but if they are that much of an amateur, they will probably not really know how to use the multimeter. I would think a test light is as cheap or cheaper then a meter. I own an auto repair shop, have worked on cars for forty years, I use a test light WAY more then the meter.

[@ksauto1]

ksauto1 An amateur will get thrown off a LOT more trying to get the setting correct on the meter and reading/deciphering the reading. A test light is very quick and easy to see right away the results.

[@sirobb]

ksauto1 If an amateur doesn't know how to use a multimeter to test a glow plug, that's the whole point of my video......to show them and I show the multimeter settings very clearly.

[@Yankeeprepper]

You are a MORON. I just thought I would chime in and give you my "opinion" too. You and the many morons like you totally screw up youtube. This guy puts out a VID on HOW TO CHECK GLOWPLUGS properly taking the time to do it and show others, whilst you chime in with a second comment about "your way". Going to your channel, I see ZERO effort and ZERO vids of your own, although you did "like" pole vaulting ups skirt vids...... so you got that going for you. Why don't you just SHUT your mouth and let this guy SHOW people the right way.

[@ROFLCOPTERLOLBRUH]

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

[@jasonmurphy435]

best described video on youtube for this.thank you

[@alitsamanhctpd3591]

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

[@roderickperez1279]

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.

[@sirobb]

Thanks. I've tested hundreds of glow plugs either holding them in my hand as well as only touching them with the multimeter probes and body resistance makes no difference to the accuracy of this test.

[@carldavies6776]

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

[@SpidiVili]

Can this be done without removing glow plugs from engine? I'm not an expert, but it seems to me it's exactly the same, plus it can be done without risk of breaking glow plug inside engine.

[@sirobb]

Yes. I talk about doing it in or out of the engine at around 1m00secs.

[@MrSuperheterodyne]

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.

[@TheMushtyroo]

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.

[@sirobb]

Thanks for your comment. You can get just as accurate a reading with the glow plug in the car. Just take care to get good contacts on the nut and tip exactly as shown in the video.

[@TienVu-fe9hv]

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

[@ianwild1233]

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

[@sirobb]

My removal method is in these comments. Thanks for watching.

[@chas2can124]

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

[@sirobb]

On a common rail diesel, the glow plugs are only really need for starting in very low temperatures so the car started ok but would run slightly lumpy for half a minute or so. Some engines use the glow plugs for dpf regenerations though so having them all fully functional is a good idea regardless. Luckily, as you can see, they're easy to test although some engine layouts mean they're awkward to reach.

[@chas2can124]

Thanks. Is it the same case for NON Common Rail diesels? I have one of them. Your thoughts?

[@sirobb]

+Chas2Can Non common rail injectors work at much lower pressure so the fuel isn't atomised as much when injected. This means the role of the glow plug is more important for good starting.

[@osoonikum1101]

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.

[@osoonikum1101]

osoonikum Just to mention place where i live, we get every winter -25 degree C easy and usually see even down to -35 degree C for a week every year. -20 degree C is NORM so your diesel have to be in top condition, including glow plugs. If your diesel is in good shape(injection timing, battery, fuel system, starter etc) it should start down to -10 degree C without much hassle even if all 4 glow plugs are shot!

[@Aussiehomestead1965]

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..??

[@sirobb]

Andrew Thomas Not a good idea if you have glow plugs which aren't 12 volts.

[@scity0032]

awesome help. Thankyou! appreciate it

[@simpydasimp2203]

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?

[@sirobb]

You can leave the battery in place. As a precaution, just don't have the keys in the ignition and it should all be ok. Just take the usual care not to short anything when doing any electrical testing. 👍

[@costasgeorgiou5015]

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. 👍🏾

[@sirobb]

As mentioned in the video, I wouldn't test glow plugs that way. There's no need.

[@costasgeorgiou5015]

@@sirobb well when get that one shorted a weird way like I did the little wire will scorch the hell out of your finger just talking from experience still a great video man.

[@marwanayache]

very useful demonstration. Thank you

[@colinaglae2605]

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

[@KI-tm8jg]

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.

[@CarloLeonKolega]

Battery? starter motor? Alternator? Did it got fixed when u swaped the glow plugs mate?

[@vincentgranville964]

Tested mine just this morning and they are 8,5 minimum Ohms. Mines done 250,000km and don't think they've ever been changed. Not looking forward to removing them but I have all the gear and no idea 😆

[@codiehay1390]

Poppet valve in injectors probably need shimming.

[@electricdixie34]

good test wish i could get them out..its been at garage and they say they will snao b4 they come out..and my cars gone to limp mode

[@electricdixie34]

snap off

[@sirobb]

You don't need to remove the glow plugs to test them using this method, so if the resistance measurement is 1ohm or less, they're fine and can stay stuck a while longer :) What car is it? Is it starting trouble you're having?

[@kungfuhamster3]

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

[@sirobb]

Yes you use penetrating oil the day before and on the day. It also helps if the engine is hot so be careful. You must also use a good fitting hexagonal deep socket and take your time. Don't try to turn it out in one go, so you loosen a little then tighten and repeat, each time loosening a little more and still use regular squirts of oil.

[@kung316i]

sirobb Thanks bud that's good to know was thinking of a torque wrench adjusting up bit by bit until they move but will do as you say with penetrating oil etc don't need to change mine but very useful to know. Thanks again

[@lezbriddon]

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....

[@sirobb]

Thanks for taking the time to comment. The on battery "test" was really for illustration only and I wouldn't supply battery voltage for as long as 20 seconds because you could easily damage a perfectly working glow plug. Also not all glow plugs are 12v so once again you could damage them. The safest method is to carry out the resistance test with the plug still in the engine and do the test cold and after the plug has been subjected to heat and /or electrical load. This will show up a defective plug and a good plug will return correct figures regardless.

[@brittonjones767]

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

[@sirobb]

You're welcome. How did the test go?

[@peterjuhasz5143]

Very good video!Thank You!

[@pedrosierra3790]

You must NO TOUCH THE METAL while you checking ohms or just one but not two, it could be different results!!

[@coccobill7982]

As a rule, that is correct. But for this, where the expected resistanse is very low, it will not matter at all. As we know, his body resistanse will be like Meg-ohms and in parallel with the glowplug. The well know formula for resistors in parallel give us (for one 1Ω glowplug): R(tot)=(Rglow*Rman)/(Rglow+Rman). Ex.: R(tot)=1*1000000/1+1000000⁓0.999999000001, that is pretty close to 1Ω. So the body does not inflict on the measurement in this case.

[@kungfujiujitsufliptrick4832]

You can touch one end and not the other

[@johnboy8060]

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

[@Aussiehomestead1965]

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

[@sarchelsami5431]

thank you indeed grate Explanation

[@markforeveryoung5625]

Do you think your fingers are non conductive ? and your body has no resistance ? you readings will be wrong as you touching boths terminals. Try mesure resistance of your hands you will see.

[@sirobb]

My body's resistance is in the mega ohms yet it clearly isn't affecting the reading from the glow plugs otherwise I wouldn't get the readings shown in this video. Do it yourself and you will find the same.

[@firstman9273]

@Mark Foreveryoung , you're right but the resistance through his fingers will be a lot more than 1 ohm, so the measured value will still be the path of least resistance i.e. through the glow plug that measures 1 ohm. So he still knows which glowplugs are good and which are bad.

[@borjaosaba4412]

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.

[@JustaCuriousity]

Buy ones according to your engine specs

[@linctexpilot8337]

You will regret buying cheap glow plugs… They don’t last very long, if they even work at all

[@rodgerq]

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.

[@rustlewarwas846]

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

[@garysmart1]

please reply what cause the glow plug to read high ohms.................... glow plugs will turn red in less than 10 second we did them at school and one of my classmate was holding the tip he was jump right away

[@sirobb]

If the wiring or conductive material inside the glow plug starts to break down, the current can't flow as easily so you get a high resistance reading.

[@garysmart1]

+SiRobb thank you ma english friend, thanks for sharing knowledge less idiot in this world means less trickster I was once tricked one time I knew this time I wont,....

[@Mushyrl-10]

Excellent video really helpful thanks my friend

[@danielmartin8671]

Nice video mate, thank you

[@allendownie7254]

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

[@47Rolling]

I have an issue where I did a motor swap on my car and I am having trouble finding out what year the motor was built and the glow plugs are different specs for different years. Ranging from 6v 12v 8.5v 10v the list goes on. Unfortunately I can’t be certain the plugs in there are also correct so taking one out and checking is hit and miss. Is there a way of being able to check what volt plug is needed by testing somehow on the motor. It’s a 2h land cruiser motor. Hope you are able to help. Cheers.

[@sirobb]

You could check the voltage at the glow plug power connector plug.

[@47Rolling]

SiRobb do you mean where the power is connected to the first glow plug and buzz bar.

[@sirobb]

Yes 👍🏾

[@wextex1198]

Buzz bar made my day ​@@47Rolling

[@vortex16a]

very helpful video, thanks a lot

[@MaikEletrica]

Very nice, thanks!

[@mroqqq7871]

Did i do something wrong or what. I bought new glow plugs and wanted to check them with my device. UT60eu from Uni-T. It couldnt be measured. The readings werent stable. Is something with the device or what? I just bought this device brand new and it is it’s first use. I attached connectors and leads to the glow plug the same way you did.

[@sirobb]

@@mroqqq7871 test a few things around the house or car with the multimeter to test the meter if you know how to. Don't mess with electricity if you don't understand what you're doing. 👍🏾

[@mroqqq7871]

@ sure thing. I am new to the topic that’s true however i know how to use simple options of the meter. Checked the voltage of the battery in the car and batteries in the remote it seems like it is ok however idk why i cannot receive the stable readings regarding the resistance. If I touch leads with each other they show no resistance neither.

[@sirobb]

@@mroqqq7871 If this is your meter, are you using the yellow button to change to ohms? The dial positions have multiple functions. m.media-amazon.com/images/I/514mYZqTzlL._AC_UF1000,1000_QL80_.jpg

[@yocjyo]

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 🙌🏼

[@sirobb]

Yes they can be tricky to change so that's why you test them first. No point in changing something that's working ok

[@Passengervehicles]

Your fingers are sometimes bridging the gap between the body of the glow plug and the tip. Would this not affect the resistance reading at all ?. Just wondering....

[@sirobb]

This was discussed way down in the comments and it makes no difference. If you think it does make a difference, don't touch the plug with your fingers.

[@Passengervehicles]

Oh I was just wondering. I didn't see all the comments

[@LituanoLT]

Passengervehicles Your skin has greater resistance than metal, energy chooses easiest path to travel, a very tiny amount is going through your body so it makes no difference on readings

[@denistuohy6420]

@@LituanoLT you mean less resistance, less resistance = less power required. Ohms law is voltage (V) = current (I) multiplied by ohms or ohms = voltage divided by current also current = voltage divided by ohms

[@indigodragon7129]

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

[@1thehandyvan]

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

[@sirobb]

Just the dead ones but be prepared for the others to fail soon as well if they are a similar age.

[@EkoKolo_Katowice]

always all of them

[@zimtuff]

They will all start going soon.

[@flyerh]

If you have a battery or lab supply,could you not put 12v through them to see if they heat up?

[@sirobb]

I show that method in the video but I don't recommend it.

[@flyerh]

Yes I did find it before you replied,but thanks for the reply.I have tested all 5 and they are all 0.6 ohms as per your video, tried to check the voltage but as it was pissing down and I was in a hurry,I didn't disconnect the coolant temp.saw your vid on timing belt, car is on 197k so due soon,I will buy a Volvo belt,but I have a friend who gets trade discount from Mill Auto on parts but they are not Volvo filters.Do you see a problem with non Volvo filters? You are probably rolling your eyes by now but last but not least, your video on the cheaper maf option does not match my 2006 v70 183 HP d5 looks like mine is part of the inline part without the srews,I am guessing just cleaning it will be enough?

[@aquatak]

switching to battery? what if it is for 5 volts?

[@sirobb]

*Never* switch to battery. Do a Resistance test.

[@Andrius1115]

Ok, I need a new multimeter as my values are jumping and I get different results everytime I restart multimeter to measure the same plugs

[@sirobb]

Touch the meter leads together before testing. If that produces a stable reading, the multimeter is likely ok.

[@linctexpilot8337]

Wiggle the leads…… Cheap multimeter leads will change resistance as they move around ;-(

[@dusty4720]

Thank you very interesting. I have a Hyundai Matrix with starting problems and the glow plugs were changed 6 months ago and the starter motor 1 month ago but the starting problem remains, it seems to me that it would be the glow plugs because once it is running everything is perfect. Is there anything in line from the battery to the glow plugs that could be faulty?

[@sirobb]

Duncan Creighton On modern Common Rail Diesels (last 15 years), starting problems are MUCH more likely to be fuel related. You need diagnostics to read the rail pressure during cranking but if that sounds too complicated, change the fuel filter if you can't remember the last time it was changed.

[@dusty4720]

Thank you for your swift response. A brief history of the car to perhaps help: 2004 Hyundai Matrix 1.5 CRDI 204,000km Fully serviced from new, last major service (Inc cam belt) June 2006 FIP fully overhauled (reconditioned) 3 years ago Glow plugs changed 6 months ago starter motor changed 1 month ago Battery less than 2 years old and tested as good Cleaning agent added to the fuel in case of dirty injectors Once the car is started it runs smoothly and there is no sign of bad exhaust all work carried out by authorised dealer. Having watched your video on the glow plug test I was wondering if there is a way to test that the glow plugs actually do work whilst removed but connected to the car system to ensure that there is not another problem within the glow plug circuitry? Any advice is greatly appreciated Duncan

[@sirobb]

Duncan Creighton You could voltage test each of the glow plug electrical connectors that fit on the glow plug. It's worth noting that as you can see in this video, I only had one functioning glow plug but my car cold started ok. In your list of work done, there's no mention fuel filter being replaced. You might also want to do an injector leak back test and there's a video showing how in my list of videos. There's no harm in making sure your glow plug system works correctly but I'll say again that common rail diesel starting problems are MUCH more likely to be fuel related. Either delivery of the fuel at low pressure or generating the high pressure required for starting.

[@dusty4720]

SiRobb thanks, I'll let you know what is found

[@theaussienurseflipper.8113]

If plug are out of car, you just put them on the battery your lock quicker, cheers Graham

[@gee3883]

nice one thanks for that

[@gssrustenburg]

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

[@sirobb]

Highly unlikely.

[@Boz1211111]

No, difference becomes obvious around 0C

[@Boz1211111]

Though it will start just not as easy

[@mikewazowski6588]

Is this test apply for the all type glow plug?

[@IainHC1]

yes

[@kyojitsu1]

Really useful - thanks. Off to test...

[@buckshot927tx]

Thanks so much for this !

[@j.t.jaeger1595]

I've got a 2008 D5, where are the glowplugs?

[@sirobb]

J.T. Jaeger Unless they've moved them on later D5s, on the front face of the engine block. Very easy access.

[@sirobb]

J.T. Jaeger Unless they've moved them on later D5s, on the front face of the engine block. Very easy access.

[@j.t.jaeger1595]

SiRobb Thanks 👍

[@aleckelly4268]

ta for that really clear explanation and demonstration

[@sirobb]

+Alec Kelly No problem.

[@sirobb]

+Alec Kelly No problem.

[@chriskoh3082]

the reading on my glow plugs is 0.9 is that considered outside of the normal range?

[@kamuts7]

Chris koh thats ok as long as its .1 and below

[@kamuts7]

I mean 1.0 and below

[@Boz1211111]

Thats good, if spec is 0.9 as for my car, anything thats mot far off will work. I have 3 at .9 and 1 at 1.2 and it works just fine

[@leemartin2041]

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

[@sirobb]

Thanks. So how did your own test go?

[@leemartin2041]

Glows plugs where fine. In the end it was a fuel problem. The fuel filter drain screw was missing an o ring resulting in loss of fuel and pressure. Hence no fuel or pressure there to fire her up in the morning :) Hope this helps anyone with a similar problem!

[@ktpala5029]

Is tha rail that connects all the glow plugs a 12V positive or a negative?

[@sirobb]

Not all glow plugs are 12V so the exact voltage depends on the engine.

[@ktpala5029]

@@sirobb understood. But is it positive or negative? Mine is coming out negative when tested. Just need to confirm so I know there is a short somewhere 🤔

[@sirobb]

Not sure I follow your point. Which meter leads are attached to what?

[@rhyshines1759]

Tony Pala switch your multi meter leads around? Put the positive on the positive side and the negative on the negative side.

[@ktpala5029]

@@rhyshines1759 all good. I've fixed the fault.

[@RED88241]

That could explain why my truck with bad glow plugs takes about 20-30 seconds to start. I’ll be replacing them very soon.

[@sirobb]

Definitely test before replacing to be sure. Hard starting diesels aren't always the glow plugs.

[@konstantin-big]

You do that test with multimeter without to remove the glow-plugs Or you can use a test chisel=test light

[@mikejames4271]

@@konstantin-big How could you possibly measure ohms with a test light?

[@konstantin-big]

@@mikejames4271 You can't Measure ohms with a test-light You can connect the test-light to B+ on Battery and the other side to glow plug without to remove the glow plug If the test-light don't illuminate the glow plug is burnt I hope you understand that I mean

[@5e34nut]

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

[@sirobb]

Thanks for the comment. If you subscribe and click on the notification bell, you'll get updates with all my future videos.

[@edmundcartwright5621]

Perfect. Thank you very much.

[@8a15zinithsahoo7]

Where you get the Glow plug

[@ab18i]

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

[@faridjahed]

very useful thanks btw how much are these glow plugs?

[@sirobb]

Farid Jahed For my Volvo D5, they are between £8-15 each dependant on the brand.

[@DustyPearl-13]

VW TDI are much more expensive- 205$ each at dealership!!! ouch....brrrrr

[@michaelgraves2301]

thank you very informative

[@Luka-ox4qk]

What should i do if mine are 2 ohms. Is that ok or should i replace them

[@sirobb]

You need to check the exact spec required for your plugs.

[@SayWhaaaaaaaaaaaaaaaaaaaaaaat]

if you dont have winters in your country -then glow plugs is not needed

[@ivangeorgiev7718]

It might have been asked - but why does this work?

[@sirobb]

Like most electrical components, working glow plugs only show the correct resistance between a limited range. Outside of that range, they don't work so this reliably measures the resistance is acceptable.

[@IainHC1]

Brilliant info! Thank you :-)

[@herberthoppe68]

very nice video. thank you