E320 Misfire
 

Hello Everyone,new guy here.I'm been having a problem lately.I have a 1996 E320.Great Car,but,lately I've been having a problem with engine misfire.Changed the plugs,replaced with Bosch Platinum 2 plugs.Misfire got worse.Replaced ignition coils,no change.Replaced plugs again with standard Platinum plugs.Problem cleared up for a short time,but is back again.Happens at idle,transmission in gear.Code reader says trouble code 300 and 302,multiple misfire.I live in New Mexico(Elevation 5290 ft. I'm a very capable auto mechanic,and have been for over 30 years.Have owned 6 mercedes before and have never had a problem outlast me,but this one has me stumped.Any Help or suggestions you have would be very appreciated.Thanks again,and you have a great forum..

Change the plug resistor/connectors under each coil and use Bosch F8DC4 plugs [use NO other]..

http://catalog.worldpac.com/mercedesshop/sophio/quote.jsp?clientid=catalog.mercedesshop&cookieid=21H0MN3YU22S17Q651&baseurl=http://catalog.peachparts.com/&partner=mercedesshop&year=1996&product=F1010-84561&application=000357357

i had a lean misfire at idle and it turned out to be 2 bad injectors.

Fixed It
 

I want to thank Arthur Dalton,for his very accurate reply to my Cry for help. Did as he suggested and by baby runs like new.Thank you,Thank you,Thank you
Maybe when I get to my other baby(1980 380 SL european)($3500.oo)Just Purchased,I'll ask again..This place is alsolutely fantastic.

You'r Welcome............