hello,

i have a w208 cabrio (clk200)
the car has bin unused for one year ,
so the battery was dead and today i put in a new battery.

everything is working fine except 1 thing.

as the engine run i hear a ticking noise and it seems like there is a valve ticking.
it never had this problem and i find it strange that it does right now

can anybody tell me what i have to do?

thx