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Old 12-04-2012, 02:46 PM
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MP3_E46 MP3_E46 is offline
Code/wrench Monkey
Location: South Denver
Join Date: Oct 2003
Posts: 1,128
Mein Auto: Carefully
Originally Posted by ctuna View Post
The DI cars have a design flaw the causes carbon build up over the valves.
No fuel passes over the valves. This is not unique to BMW.
Hmm.. I'd not thought of that before. So this is an air intake valve on a DI car? Presumably the carbon is sucked in from the combustion chamber and builds up over time?

This is the 335i with ~138K miles having lots of decent size repair bills right?

Six Euro Deliveries since December 1998 (Owned E46, E90, E91, E92 and E93)

28 vehicles in 26 years of driving so far. Guess I like cars

Last edited by MP3_E46; 12-04-2012 at 02:48 PM.
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