breeze247

I have a 2003 CLK55 AMG with the 16 spark plug motor.

A couple of questions:
- What is the reason for the 16 plug design?
- How do I know if 1 of the plugs or 1 of the plug wires is not working?

I have a tool that can read Mercedes codes, and it is not showing any issues at the moment.

pmercury

iTrader: (2)

Hi
https://en.wikipedia.org/wiki/Dual_ignition

Using MB Xentry Das it does tell you when 1 or 2 are not working yes

cheap tools should read those codes too

and don't complain I have 24 spark plugs I replace every year and a half

breeze247

Thank you!

Does anybody know who the OEM manufacturer for ignition leads is?

E55Greasemonkey

Bosch

breeze247

In the end I went for Beru. Bosch only sold separately here in the UK.

Beru appears to be a good OE alternative and was priced well above the cheap option. Lets see what they are like when they arrive.

pmercury

iTrader: (2)

they are as good don't worry

breeze247

So, the ignition leads have arrived.

16 leads, as expected, along with 8 steel rings. The rings are a bit like key rings.

Does anybody know what the rings are for and why I might only have 8?

No instructions in the box, sadly.

Edit: the rings were actually from the tips of the leads. They are used to keep the end of the lead under compression. 8 were on the leads and 8 were in the box. Simple!