Spark Plugs

[Derek Lecours]

Thanks for the feed back! So far this B class is truly Top Secret.

[b200t turbo]

I called my MB dealer and the parts guy gave me a price for the plugs also a part number for the plugs

2006 b200 turbo
MB part # spark plug: 004 159 4303 $15.34 cnd retail price

I did find an equivalent Denso plug on the Denso Japan website.
VK20 for the turbo 2.0
K20PR-u for 2.0

they also have the same reference for the a-class
there is an odd one : m200 which has the same chassis as the b-class.

[Mike Tee]

The colour looks too dark, it almost looks oily.

[Derek Lecours]

I was wondering where all that oil was going.






Approximately 0.4 liters per 5000 km on the last oil change.
The pic is deceiving.
I'll have to get it out for a high speed spin....
A little rub with a wire brush and it cleaned up nicely but I was hoping for a nice warm brown when I pulled it.

[Mike Tee]

Did you pull the others too? Were they all the same?

.1 L per 1000 km is not too much - my 405 drinks five times that (at nearly 400,000 km) and its plugs are nice light grey/brown.

[Bill F]

Looks like lots of carbon build up especially on the ceramic, could cause missfire if it gets worse. Oil looks a lot different so I would not worry. Time to put the pedal to the metal and burn it off ( long hard run ) and then take the plugs out to recheck. If the plugs still have that appearance maybe a different brand or a higher heat range.

See Spark Plugs and Spark Plug Wires - Facts & Repair Advice for some god photos.

Bill

[Mike Tee]

I checked my oil tonight at 10,000 km and it's down _perhaps_ 0.4 L. Hard to tell, last time I checked it was in Utah after a high speed run, so the oil was a lot hotter. So maybe 0.04 L/1000 km, about half of Derek's car, still perfectly fine and no topping up needed between 15K changes. I'm stretching this one to 15 K because 6000+ was done in a week on a road trip, so the oil should be fine after 5000 more km.

About the plug, it looks a little shiny on some of the black area, hence my oil comment. But with only 0.4 L gone after 5 K km, that can't be oil, must be a photo reproduction issue.

[Derek Lecours]

Picked up 4 plugs from the stealer.
Outside of the box, you can't tell what it is. Inside it's a Bosch # F8DER and only available from Germany.
Auto Electra says it's also only available from Germany and is again replaced with Bosch #SQR8DE
I would have preferred to have purchased a better (long life) plug if I had had that option.
Derek

[Bill F]

Very Well Done

Looks like a tedious job, not sure if it can be any harder. I'm assuming the car started and ran even better than before,so it was worth it.

Did you ever get a price from the dealer to replace the plugs???? I always try to get a price, it always makes a job more satisfying to see the value of your labour.

In your list you show a Red Box that is available locally, but you fail to mention how many to order

Very very well done and very good photos.

Bill

[kdbcom]

Great pictures & instructions, Derek, better than any instruction manual,

Almost makes me wish I got a petrol B especially when I see that the diesel injector removing tool on ebay is about $600 cnd

If only we could all remember to keep a camera handy whilst working on the B we could build up a comprehensive workshop manual between us.

P.S. How do you manage to keep your hands clean enough to take those brilliant photos whilst working on the car as well ???