Replacing VW TDI Glow Plugs - 1.9 ALH Diesel

[@caly6527]

Womderfully put together video. So helpful, lots of detailed explanation for every aspect of the job and any issues that could arise. Thank you so much.

[@gregs_garage]

Thanks so much EB

[@TonyGlover-se6ji]

Thanks!

[@vampir335]

WOW video is so well done, clear concise very helpful, you got a sub buddy

[@bucketheadothers2384]

Wowee

[@reddelarosa5157]

Excellent video, thanks! Does the check engine light go away on its own or does it have to be reset? (after changing the glow plugs)

[@gregs_garage]

thanks. I think it went out by itself. But I can't recall 100%. honestly OBD2 readers are so cheap now I'd just have one on hand regardless. Handheld or bluetooth with smartphone app. With VW you can't read all codes and it doesn't always work (get VCDS for that), but usually it's enough to see basic faults and reset CEL.

[@BobSmith-mc7uq]

Little anti seize on the threads is a GOOD idea.

[@gregs_garage]

Did I put any on? I can’t remember

[@aimeeineson9883]

Had an issue with my vehicle not firing up had to get the breakdown team out to get it going then the glow plug light flashed for a second earlier today! Do you reckon that’s a good reason as to why I’m having issues starting the engine. Thank you good video explaining to a complete newbie to working on my car

[@gregs_garage]

I doubt it's the glow plugs but who knows. post a video Miss.

[@zer0gravity184]

Great video, very comprehensive.👍 Question: When you're installing the plugs, do the plugs have a particular sequence to follow or can the plugs be installed in any order?🤔

[@gregs_garage]

any order. they are identical

[@zer0gravity184]

@@gregs_garage: I appreciate the help.👍

[@estewarrior1]

Hey thanks for the video. What are the signs of defective glow plugs.

[@gregs_garage]

Hard starting

[@RollYourRock]

Check Engine Light

[@edwardmanqele2120]

So, my Jetta 4 1.9tdi doesn't have power to go forward especially when it's on gear number 2 in an incline area. Is possible that it might be the glow plugs?

[@gregs_garage]

no. glow plugs are for cold starting only. nothing to do with driving.

[@edwardmanqele2120]

What could it be, i am very worried?

[@chd345oof]

​@@edwardmanqele2120or your transmission

[@justahick3236]

​@@edwardmanqele2120injectors/ injection pump or turbo /turbo boost presure lines

[@davidleighton5701]

A way to test a glow plug is with a test light. Ground clamp on positive battery terminal and probe on glow plug post. If test light lights up the glow plug is good.

[@JozsefHKupas]

Hey , Should it be done with the engine worm or cold ?

[@gregs_garage]

cold probably safer no burns

[@Ram14250]

Hi Greg... did the new glow plugs help start easier?

[@gregs_garage]

I think so, although the weather improved so it's hard to tell. Good for peace of mind to have new ones in anyway.

[@brittneyzuccatto6118]

I pulled out some bosch 250201032s out of my car, but have the same ngks as you have. Are these interchangeable? The bosch are shorter than the ngks

[@gregs_garage]

should be the same size from the thread to the tip I think. What are you driving?

[@NeuroPulse]

Do I need antisieze?

[@gregs_garage]

doesnt hurt if bottle says it's ok with aluminum.

[@akeeljaved8195]

By changing the glow plugs did this have a improved acceleration and fuel efficiency?

[@gregs_garage]

no, glow plugs help startup. They have nothing to do with acceleration or fuel efficiency.

[@jamesdean5677]

@@gregs_garage I read that they can hurt fuel efficiency at tdiclub.

[@david197407]

@@jamesdean5677 maybe when cold they may do this as in some engines not sure about these but in some engines the glow plugs sometimes stay glowing for a short while after the engine starts to help it run better till it warms up a little

[@jamesdean5677]

@@david197407 I was just looking at making excuses for slightly substandard fuel economy. You know how it is. 😅

[@arfetherussian]

Glow plugs do not help or contribute to acceleration or fuel economy at all you idiot🤣🤣🤣 what a moronic question, could’ve saved yourself the embarrassment and googled your stupid question😂🫵🏻

[@loumontcalm3500]

Generally, the harness goes bad and the glow plugs are fine. Poor design, plastic becomes brittle. It's a bit of a job to replace it in its entirety, up to the main harness, but can be done. I did that instead of cutting/splicing into the old harness. That bad harness was what was throwing the codes, in my case, not the glow plugs.

[@anthonylocsei9716]

I replaced them, blew out a week later, did this 2 times. Replaced glow plug relay, did not help. What can be the problem?

[@gregs_garage]

could be many things. google this and look at TDIclub forums for ideas.

[@bsboneless1]

Is it pretty much the same for a bew model

[@HayRiver2]

Yes

[@Grizzly907LA]

Glow plugs one and three are almost impossible to remove if you don't have that long extender bar.

[@christianworthinton8000]

First, throw the plastic cover away. It prevents you from seeing any problems. A multimeter set to Ohms resistance will detect a bad glow plug. A reading of 1 means it's burnt out. + to the terminal, negative to ground.

[@gregs_garage]

the plastic cover supports the oil dipstick and reduces noise. Do not test glow plugs - replace them they are cheap maintenance items.

[@jacobkane860]

Thanks bro. Helped me with my dad's 05 Jetta diesel. Oh, and is yours a stick?

[@gregs_garage]

5-speed manual Kane

[@jacobkane860]

@@gregs_garage nice.

[@Mars2Point0]

Cool

[@NeuroPulse]

I'm surprised the 12 volt doesn't fry ya. Call me ignorant and electrophobic.

[@twilliams1755]

12v isn't enough to pass through skin, so as long as you don't stab leads into your skin you're fine

[@Freddie1980]

If your glow plugs are on the way out you will notice it in the winter when starting the engine from cold.

[@gregs_garage]

thank you, Capt. Obvious

[@Freddie1980]

@@gregs_garage when abbreviating words you typically drop the vowels so 'Captain' becomes 'Cpt'. BTW water is wet

[@RollYourRock]

@@Freddie1980 😂👍😂🤣

[@tolloromassi99]

​@@Freddie1980 This @gregs_garage guy is one upping everyone in the comments. What a little child.

[@3347473730]

you talk too much you should talk less bother

[@gregs_garage]

will keep that in mind - thanx for the feedback bother

[@3347473730]

@@gregs_garage you speak you speak you speak spit a little