View Single Post
      11-15-2013, 06:29 AM   #23
Denso
Lieutenant Colonel
Scotland
715
Rep
1,529
Posts

Drives: e46M3 Ruby, Porsche Cayman GT4
Join Date: Oct 2010
Location: Sailing the petrol lake

iTrader: (0)

Garage List
2015 BMW M4  [0.00]
Quote:
Originally Posted by M3 Adjuster View Post
we nornally get ten runs on a concrete aggregate lot that has a fair amount of pebbles... Suddenly pulling up to the line in say.. run three I hear the cowbell.... there is no doubt in my mind


Nothing to say that there cannot be other causes.. but I have cleared pebbles out of the heatshield and that reslolved the issue.
Sometimes backing up and stopping rapidly will clear them but oftentimes not....
Thanks, going to try the hard braking method tonight and see if it clears it
Appreciate 0