bj'sbrabus

I purchased my first Mercedes last week, a CLK 500 Brabus. I love the car and the styling but.......When I started the car the first morning, I noticed a ticking noise that sounded like a hydraulic lifter was not filling properly. It occurs with each engine revolution and is especially apparent under any degree of acceleration. I took the car in to the dealer for resolution and after keeping it overnight to do a cold start, they proclaimed the sound normal. Finding it hard to believe, I test drove another new CLK 500 and to my surprise, the same ticking noise was evident. I then drove a CLK 55 AMG and no noise was apparent. The rental car they gave me (430 I think) did not exhibit any noise. Has anyone else experienced this problem and been given a more comprehensive explanation than "normal".

I have looked through tech bulletins and service letters to no avail. Only similar noise was the exhaust manifold air compressor or altenator.

It seems to be getting louder and I am very uncomfortable fearing it might be a valve or rod bearing.

yellowslk

You should check you cats. This ticking happens alot on the 32slk. Its cause buy the exhauts pipe hitting each other when they get hot. If your clk 500 has two cats next to each other, this might be the problem you should take a look.

bj'sbrabus

Thanks, I'll take a look at the exhaust system. It has a brabus package with two catalytic converters.

bj'sbrabus

Turns out the problem was related to a Tech Service Bulletin P-B-07,00/21F-1260. They replaced front engine mounts with an updated mount. It completely quieted the engine ticking noise.

Karsa

bj'sbrabus: could you please check your PM box

Thanks

E320Star

Where can you check for these bulletins?

Thanks

lkchris

http://www.startekinfo.com/StarTek/search.jsp

click on "Star Bulletins."