Rattling noise coming from front of W204 (video)
08-20-2020, 04:47 AM
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W204 C250 2011
Rattling noise coming from front of W204 (video)
Hi guys,
I own a w204 c250 2011 Diesel engine. As you can hear from the video, when i start it (usually happens on cold start, but also after i let it sit for couple of minutes) it makes this rattling noise. From what I could hear, it came from the front of the engine and not the back. I say this because i thought it was the timing chain, but i was told that the timing chain for this model is in the back of the engine and not the front. After some seconds it goes away, and i think it goes away faster if I rev it a couple of seconds. Do you guys have any idea what this can be? I want to point out that the car has more than 200.000KM.
I own a w204 c250 2011 Diesel engine. As you can hear from the video, when i start it (usually happens on cold start, but also after i let it sit for couple of minutes) it makes this rattling noise. From what I could hear, it came from the front of the engine and not the back. I say this because i thought it was the timing chain, but i was told that the timing chain for this model is in the back of the engine and not the front. After some seconds it goes away, and i think it goes away faster if I rev it a couple of seconds. Do you guys have any idea what this can be? I want to point out that the car has more than 200.000KM.
08-20-2020, 07:02 PM
#2
Senior Member
Can't really hear any rattle with the bonnet closed !!!
From your description it could be the alternator clutch pulley. Look for the belt tensioner bouncing about a bit when the engine is first started and the battery is being recharged.
From your description it could be the alternator clutch pulley. Look for the belt tensioner bouncing about a bit when the engine is first started and the battery is being recharged.
