No not really often.
Was a problem with the first double vanos units in S50's but you didn't even get it if I have understood it correctly.
You don't have to replace the whole unit, but BMW allways do it anyway.
It's is common that it rattles a few seconds after start up, but that isn't a problem.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
border='0' alt='user posted image' />
1994 Arcticsilber M3, 286hp, 18" AC Schnitzer wheels.