Flat spot at 3.5k rpm

Pigpen

Active Member
Joined
Nov 11, 2009
Messages
68
Location
London
Car
C124 E320
Hi all,

As I'm doing less miles in the old girl recently I have allowed myself the pleasure of occasionally going mad and revving up to over 4k rpm once in a while without crying at petrol stations. I've noticed a flat spot at about 3k -3.5k rpm before it picks up again at 4k+

I seem to remember when I was riding bikes at about the time the car was built that many of them had a flat spot built in to squeak past the noise regulations. Is this the same for these cars does anyone know?

Cheers

PP
 

WG M-B

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Joined
May 26, 2011
Messages
1,897
Location
N/W london
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C63 Wagon in black
No flat spots built in on these!!!
Usual suspects......

MAF sensor
HT laeds/ plug caps
Wiring loom degrading
 

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