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Hi I have a w220 S320,2000 model... had it running really rough and found that the fuel filter had metal filings or partices in it which I also found stuck in 2 of the injectors...
Any idea as to what internally could of caused this?
 

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W221 & Audio Moderator
2013 S550
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10,950 Posts
First thought would be a failing fuel pump. Alternatively, if the fuel pump had been replaced, it could be from screws or bolts mounting the pump in the tank.
 

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2006 B 200 .....& Audi A6..
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8,155 Posts
It's a shame that the fuel filter didn't pick it all up. If you can actually see the metal filings, how on earth did they get past the filter?:confused:
 

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2004 W220 (S430) ; 2001 R129 (SL500) Sport
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1,335 Posts
Internal corrosion in the fuel line before and after the filter? Has the car been stored dry at any time? Maybe repair that required the lines to be removed and allowed to dry then reinstalled? I'm with you Derek, you can see filings--they ought not have got past the filter.
 
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