Strange Engine noise
Thread Starter
Senior Member
Joined: Jul 2006
Posts: 259
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From: SF Bay Area
06 E55 SOLD, 89 300 SE 375,000 miles
Strange Engine noise
When the car is idling when at operating temps, the engine sounds to some degree like a diesel. Quite a bit of clatter coming from the bottom end of the motor. It basically sounds like the bottom end is going to fall out.
I have taken in to the dealer and they say that the noise is normal.
Anyone elses cars make this noise.
Daryoosh
I have taken in to the dealer and they say that the noise is normal.
Anyone elses cars make this noise.
Daryoosh
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Joined: Jan 2005
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From: Pittsburgh,pa
2010 Range Rover S/C 2010 Land Rover LR4 HSE Lux Plus 2007 BMW R1200GS
My S55 sounds the same way. I think part of the noise is piston slap. It seems that all of these new cars have very short piston skirts for efficiency and power and that can definately add some knocking/rattle type noises.
Joined: Jul 2006
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From: Seattle
'19 E63S, ‘16 CLS63 RIP, '09 E63 Gone, '06 M5 Gone, '97 Supra TT Gone
You should hear how the "yowling V10" on my M5 sounds at idle, like a friggin civic. It buzzes like a lawnmower.
Out Of Control!!
Joined: Sep 2004
Posts: 13,394
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From: San Diego
2015 S212
Check where the noise comes from, how loud it is, and how long it lasts. If it is in the head, then it is likely "normal". Our cars run synthetic oil, which takes a sec to get circulated since it drains so well. If the noise is indeed in the bottom, thne that would be the crankshaft bearings and mine is quiet there. BUT, mine is noisy in the head at startup. I'd say get it documented that it is normal. NOT just an I asked and they said. Get an invoice that says what the customer describes and a response from the dealer. That way, you are protected later just in case. These cars are VERY noisy. They are also pretty rough at idle. Just how the beast is.
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From: Sin City
12' C63 P31, 06' Supercharged Range, 08' BMW 550i
I had a "machine gun" type noise from my and it tuned out to be a loose pulley. MB covered it under warranty. I'm not sure if this is what you're referring to, but it wouldn't hurt to get checked out.
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Originally Posted by vader
Mechanical music !!!
If you beautiful sound out of motor you need a small block Chevy with a mild cam. Of better yet a RAT motor. They both make symphonic sounds IMHO.
Thread Starter
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From: SF Bay Area
06 E55 SOLD, 89 300 SE 375,000 miles
MBWorld Fanatic!
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From: Sugar Land, TX
BMW E39
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Pay particular attention to idler pulleys and anything with rotataing parts (supercharger, AC compressor, etc).
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From: Southern Cali (Ontario)
any MB engine.. is usually pretty noisy.
Even the C300 and 350 when compared to Honda or Toyota.
The V8's..same thing... compared to Lexus
The good thing that BMW and Audi engines are pretty noisy too.. so I guess its a German engineering thing.
Even the C300 and 350 when compared to Honda or Toyota.
The V8's..same thing... compared to Lexus
The good thing that BMW and Audi engines are pretty noisy too.. so I guess its a German engineering thing.
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From: So-Cal
W211 E55 AMG, ML63 AMG, Past 996GT3,ZCPM3,Brabus C32,ML 500
I had a funky noise, it sounded rattely like the C230 crappy little motor. Problem was a Supercharger Belt Tensioner cleared under warrenty, I guess it's around 800.00
