W203 C180K (M271) Coil Pack Question. Any MB technicians in the house...?

[markjay]

As far as I know one way to spot a faulty coil pack when you have a misfire (and no code reader) is by the white stains on the plastic indicating overheating.

My car seems fine, no sign of trouble whatsoever and no fault codes (I do have a code reader).

However when removing the engine cover recently, I noticed that one of the BERU coil pack looks as if it has whiteesh deposits, almost like stains from a dried coolant spill. I wiped it off and it now looks a bit cleaner but some of the whitey colour is well baked into the plastic.

I was wondering what do you think - should I replace it pre-emptively or wait for the dreaded misfire? I am happy to fork-out for a new one if the white colour indeed suggest impending doom.

Thanks!

 

[Aletank]

Buy one and keep it in the boot, cheap enough and easy enough to change when you get that mis-fire

 

[markjay]

Buy one and keep it in the boot, cheap enough and easy enough to change when you get that mis-fire

Thanks, makes sense. If I already buy it though, I might as well change it and keep the old one (which is till good - for now) in the boot?

 

[Aletank]

Why change it if you arn't having any problems ?
Buy one and keep it in the boot, you never know one of the others may go before that one !
Even if you do change it, either way you would have a good one in the boot as a spare