Mercedes W204 C Class 2012 CDI Rattle Sound On Cold Start up

[MarkThomasson]

Hi all ,

Was looking for some advice / guidance regarding the engine sound i hear on cold start every now and again not always on every cold start and only happens on cold start never warm starts on my w204 c200 cdi c class , 2012 , I hear this rattle sound it varies the exact sound , however i have uploaded it i have had timing chain checked it is fine and oil fliter replaced last year last december along with air fliter and fuel fliter , my machanic thought it might have been the engine cover not put on right bu this now does not seem to be the case..

 

[steve333]

I would get a second opinion-that sounds like a classic timing chain issue.

 

[MarkThomasson]

I would get a second opinion-that sounds like a classic timing chain issue.

did u listen to the sound i put ?

 

[OneForTheRoad]

did u listen to the sound i put ?

Did you read his reply ?

 

[Deleted member 65149]

I would get a second opinion-that sounds like a classic timing chain issue.

I’ll confess to knowing nothing about Diesel engines, but would a loose timing chain only rattle on cold start up? Is the tensioner hydraulic and needs the oil pressure to build before it takes up the slack?

 

[OneForTheRoad]

I’ll confess to knowing nothing about Diesel engines, but would a loose timing chain only rattle on cold start up? Is the tensioner hydraulic and needs the oil pressure to build before it takes up the slack?

Yes. He got all his answers on another forum. But chooses to ignore all.

 

[mersum1es]

Perhaps going to benzworld.com would give accepted answer

 

[pcthrillrider]

Hi all ,

Was looking for some advice / guidance regarding the engine sound i hear on cold start every now and again not always on every cold start and only happens on cold start never warm starts on my w204 c200 cdi c class , 2012 , I hear this rattle sound it varies the exact sound , however i have uploaded it i have had timing chain checked it is fine and oil fliter replaced last year last december along with air fliter and fuel fliter , my machanic thought it might have been the engine cover not put on right bu this now does not seem to be the case..

thats a very lose timing chain,dnt use the car until u get it sorted

 

[pcthrillrider]

I’ll confess to knowing nothing about Diesel engines, but would a loose timing chain only rattle on cold start up? Is the tensioner hydraulic and needs the oil pressure to build before it takes up the slack?

also has a spring inside

 

[MercedesDriver]

Get a second opinion mate without driving the car, just let them listen that recording you’ve made. It sounds like very poorly timing chain.