Self service parts...

[brightside]

Hi all,

Sorry If this is about somewhere but I gave up trying to find it.

Car need's a service. 20TDI (BKP) 73K miles

I just want to check I dont miss anything out:

oil
air filter
glow plugs
pollen filter
diesel filter

Anything else?

[zollaf]

oil filter

[phil miller]

why the glow plugs? not something that you normally change on a service

[rapport25]

why the glow plugs? not something that you normally change on a service
x2?

[g-black]

I changed all off mine in the last car and it made a huge difference. Car ran the smoothest it ever had! But I was told there quiet awkward to get at. Not sure how true that is....

[rapport25]

I changed all off mine in the last car and it made a huge difference. Car ran the smoothest it ever had! But I was told there quiet awkward to get at. Not sure how true that is....

A diesel engine works on compression not ignition. Correct me if I'm wrong but glow plugs only work when you start the car hence the light on the dash.

[Quatrelle]

a diesel engine works on compression not ignition. Correct me if i'm wrong but glow plugs only work when you start the car hence the light on the dash.
x2;)

[g-black]

They were all changed when my second injector went. It was a big difference compared to when the first injector was changed, so I assumed it was the glow plugs. Didn't notice much difference on start up.

[rapport25]

They were all changed when my second injector went. It was a big difference compared to when the first injector was changed, so I assumed it was the glow plugs. Didn't notice much difference on start up.


They did not need changing then. I had an old pug diesel around 15 yrs ago and I had trouble starting it in the colder months. Quick fix let the plugs heat up 3-4 times before starting it. As the glow plugs wear they become shorter hence less area to ignite the fuel. Once the diesel unit is running it relies on compresion(heat) nothing more.

[brightside]

sorry yes forgot to mention oil filter doh >.<

Erm, I was only changing them just because they're only cheap to get and in the cold sometimes it can take a few "plug in" and "unplug" of the key to get it to fire up.

Changed them on my last TDI when I serviced it also, but it turned out it was the harness that was causing the greif with that lol

Thanks for the replys though guys :) Always worth double checking that you've not missed something out haha

Also missed a vital one...... A BLOODY GOOD VALET! lol!

[Zeb]

I replaced my glowplugs last month, and I must say I have seen a huge difference in performance, and it doesn't misfire below 2000rpm anymore!

The glowplugs were pretty knackered, so I'm glad I changed them :)

[phil miller]

A diesel engine works on compression not ignition. Correct me if I'm wrong but glow plugs only work when you start the car hence the light on the dash.

modern engines dont need the glow plugs for initial start up they come on and go off during the first 5/10 mins of starting all controlled by the ECU


T As the glow plugs wear they become shorter hence less area to ignite the fuel. Once the diesel unit is running it relies on compresion(heat) nothing more.


glow plugs dont wear or burn down and get shorted, they simply glow, they warm the combustion chamber to aid the igntion of the diesel under 400 plus psi pressure, as above modern engines use the glow plugs to maintain smooth idle and emissions

[rapport25]

modern engines dont need the glow plugs for initial start up they come on and go off during the first 5/10 mins of starting all controlled by the ECU

The whole purpose of a glow plug is to warm the combustion chamber hence in the cold you will see the light on for longer periods of time.



glow plugs dont wear or burn down and get shorted, they simply glow, they warm the combustion chamber to aid the igntion of the diesel under 400 plus psi pressure, as above modern engines use the glow plugs to maintain smooth idle and emissions

My understanding is glow plugs brake down over time. The rod on the glow plug gets shorter so there is less glow plug to warm the combustion chamber hence trouble starting a cold engine. Maybe I'm wrong :Blush2: As for maintaing smooth idle and emissions I would imagine that is what the egr valve. Or air flow meter is for.

[phil miller]

My understanding is glow plugs brake down over time. The rod on the glow plug gets shorter so there is less glow plug to warm the combustion chamber hence trouble starting a cold engine. Maybe I'm wrong :Blush2: As for maintaing smooth idle and emissions I would imagine that is what the egr valve. Or air flow meter is for.


A glow plug breaks down, and over time take longer to get to temp on an older engine it would be hard to start as the glow plugs on them ARE only used for starting

Now the air flow meter does just that measures the mass of air entering the inlet track, it will also measure the temp of the air, the EGR valve mixes spent exhaust gas with the intake to lower the emissions yes but the glow plugs can comtinue heating/coming on and off for about the first 10 minutes of start up, to aid smooth idle and emissions, like i said they are controlled by the ECU
im sure we can all remember what an older diesel was like for the first few minutes from cold start, smokey noisey things
a glow plug element can be made from the likes of platium and iridium so it is very unlikely they get shorter as they are a very strong element

In the last 18 yrs since i started in the motor trade the only time i have ever seen a glow plug that has got shorter was when a piston fancied a cylinder head for lunch

[rapport25]

A glow plug breaks down, and over time take longer to get to temp on an older engine'

In the last 18 yrs since i started in the motor trade the only time i have ever seen a glow plug that has got shorter was when a piston fancied a cylinder head for lunch

At first quote. So it breaks down internally then :o

At second quote :biglaugh:

[phil miller]

Glow plugs dont get shorter, they slowly take longer to get to temp, these's engines do not use glow plugs like a 1990 205 D they are controlled by the ecu, pick bits of my posts as much as you want, im not bothered, if it make you feel better your 100% right, i dont care, i have spent alot of time understanding how new type diesels work and i was trying to pass on the info to people interested, it appears you know best so i will leave you thinking glow plugs get shorter and only work for starting and once started have no other job, thats fine i was trying to give you some more info about how a modern glow plug works

[rapport25]

Glow plugs dont get shorter, they slowly take longer to get to temp, these's engines do not use glow plugs like a 1990 205 D they are controlled by the ecu, pick bits of my posts as much as you want, im not bothered, if it make you feel better your 100% right, i dont care, i have spent alot of time understanding how new type diesels work and i was trying to pass on the info to people interested, it appears you know best so i will leave you thinking glow plugs get shorter and only work for starting and once started have no other job, thats fine i was trying to give you some more info about how a modern glow plug works

Phil, You have got the wrong end of the stick. I'm not having ago. I thought that they worn down as in got shorter. You cleared this up by saying they take longer to get to temperture. So they break down internally?.

As for you second quote I liked your description that a piston fancied a cylinder head for lunch. Thats the only time you have seen a glow plug get shorter.:biglaugh:

And I thanked you before for your useful post :confused:

[brightside]

I've not seen a short glow plug yet, seen them covered in white crap though lol

[phil miller]

Phil, You have got the wrong end of the stick. I'm not having ago. I thought that they worn down as in got shorter. You cleared this up by saying they take longer to get to temperture. So they break down internally?.

As for you second quote I liked your description that a piston fancied a cylinder head for lunch. Thats the only time you have seen a glow plug get shorter.:biglaugh:

And I thanked you before for your useful post :confused:

im really sorry mate ive just re read the last few posts and i took it totally the wrong way :beerchug:

[rapport25]

im really sorry mate ive just re read the last few posts and i took it totally the wrong way :beerchug:

Its the last time you get a thank you ;). Only joking :beerchug:

[phil miller]

Its the last time you get a thank you ;). Only joking :beerchug:

lol

[Sti_Prodrive]

What are the best glow plugs to use? & where from?

[Zeb]

These what I ordered for my Passat B6 2.0 TDI

These are genuine NGK CZ304 glowplugs, that will fit all 2.0 TDI engines!
http://cgi.ebay.co.uk/1x-NEW-NGK-GLOW-PLUG-AUDI-A3-2-0-05-03-CZ304-9835-7V-/250655201654?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a5c36d976

[phil miller]

What are the best glow plugs to use? & where from?

well IMHO Genuine are cost the earth, i fitted NGK in my Golf but bosch (genuine all bar the price) are really good this is what GSF supply

but i have used in the past on other makes, champion (not great) Denso, and of course genuine, i will happly fit NGK, Denso or Bosch