Replacing a couple of glow plugs

[furfurfur]

Two of my GPs on the ASB engine are reported to be open circuit. Plan to replace them when I next service the car (DIY).

Should I replace all 6 at once, or is doing just the 2 duff ones OK?

Can I test them with a multimeter before removing them to make sure it's not a wiring issue?

[Guest 2]

At least once a year there's one that goes in mine and it's changed individually by Audi (under warranty thankfully) so must be fine just doing one


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[Akash]

How strange, I literally came on here to find out about glowplugs myself and saw your thread. I think one of mine has also gone:
005663 - Glowplug for Cylinder 6 (Q15)
P161F - 001 - Open Circuit

Reading around, it seems it is advised to get them replaced every 40-60k miles according to EuroCarParts though that could just be a sales talk. Either way at £16 each, I think I'm going to do all of them as I've gone over 60k now.

[MarkTM]

Picked mine up from ECP for £11.02 inc VAT when they had a sale on :)

part no 438440015

Was getting a glowplug error on No 2 cylinder, weirdly it came back for a while and was considering changing the glowplug timing control module...however fault has now been off and stayed off for around two weeks....maybe it just took time to clear itself:confused:

As stated in another thread I paid a (VAG trained) local independant mobile mechanic £50 to change my glows/fuel filter and the sparks on my Jag...no VAT either!

Here's where what my plugs looked like (same length as the new ones) and weirdly cylinder 2 isn't the discoloured one.

22641

[furfurfur]

The GPs that I need to replace are on cylinders 3 & 4 apparenly. So... which cylinders are they, looking at the engine? :)

[MarkTM]

£60.48 inc VAT & delivery for 6 on ECP currently.

There are several posts that identify glowplug/cylinder location just do a 'glow plug' search on here.

[BO0557]

I just bought a set of Bosch glow plugs for my 3.0 tdi a4 and has anyone got any good tips for replacing them all with out undoing almost everything on top of the engine???

[snapdragon]

I used NGK Y-609AS from Mistersolutions
Most people say do with warm engine.
The electric plugs pull off with needle-nosed pliars.
Use 1/4 glow plug socket and selection of extensions and a wobble-extension.
At least one plug on each side you can't get a straight angle on it, so putting the new one on would cross-thread easily if you didn't have a wobble unit, or the thickness of 3/8 extensions would offset you even more.
Also put some plus gas down each bore first, the threads in the engine are delicate and do tend to leave some aluminium material deposited on the old plug threads.:yikes:
Try to clean down the bores with airline or stick too before putting the new ones in.
ELSA says put them in dry, but the NGK and BERU instructions say use paste, I went 50:50 and used just the faintest smear of ceratec grease, just to help stop the threads picking up.
I also did mine up with a little less torque than recommended as it just seemed too much.

[BO0557]

Hey snapdragon... Thanks for the response!! I must be really bad at searching but looking for a 1/4" glow plug I find next to nothing :(

and by wobble joint you mean the buckle joint extension?

[dan2485]

Hey snapdragon... Thanks for the response!! I must be really bad at searching but looking for a 1/4" glow plug I find next to nothing :(

and by wobble joint you mean the buckle joint extension?

Just google 'wobble extension bar'.

[BO0557]

Yeh worked out the wobble joint but forgot to amend was more looking for a link to the 1/4" glow plug socket

cheers

[Doctle Odd]

You can test them with a simple test lamp. Just take the wire off the glow plug and connect the test light to live on the battery and the probe to the terminal on the glow plug. If it doesn't light the plug is duff. This is a simple yes/no test and won't tell you how well it's working
Two of my GPs on the ASB engine are reported to be open circuit. Plan to replace them when I next service the car (DIY).

Should I replace all 6 at once, or is doing just the 2 duff ones OK?

Can I test them with a multimeter before removing them to make sure it's not a wiring issue?

[NHN]

I had some real fun fitting 6 new ones in a clients 3.0 tdi B7 Saturday, took fair while & I had enough tools for sure, had to move a load of stuff aside to avoid any issues with buggering threads, as the old ones were already tough as hell to remove & had me questioning myself over thread direction lol.

The drivers side plugs were a hell of allot harder to remove & wondered if they were subject to more heat, as above they say clean out the area around the existing plugs before removal to stop anything falling inside, I also added some wd to the new threads given how hard the old ones were, triple checked threads for any crossing, I worked back/forth a bit to make sure they were ok & not damaging the sockets, all went in ok eventually.

For what seems a simple job can take a long time with things like fuel rails in the way each side, amongst other things, its mainly disconnecting stuff to get the extra movement of parts to gain access to these things, this was to avoid any damage to the socket threads even with wobble bars etc.