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      09-16-2010, 12:59 PM   #236
Detox
BMW Freak !!!
United Kingdom
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Drives: BMW M3 SMG (E46) Vorsteiner
Join Date: Sep 2010
Location: Basingstoke

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Quote:
Originally Posted by Nikos120i View Post
Why are the pistons so dirty?

Is it because of poor petrol quality?

Question to the 320si mechanic above.

Yesterday I gave my car to friend to drive it...and while on 5th, reving he accidentally went to put 4th instead of 6th, but he didn't do it fast...but decluched really slow...so it revved up to 7.500 and just before it went to 8 he put it in 6th.

Do you think my engine is damaged?

I don't have any issues now, at all...but you think it's damaged?
Not really Relax just a quick over rev is not an issue..
BMW have rev limiters but obviously they are useless in this situation (mechanical over rev) so be careful next time...

Forget it.. all is still ok