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Injection System Cleaning

Discussion in 'California(Portofino)/Roma(Amalfi)' started by gadgetman, Sep 30, 2012.

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  1. gadgetman

    gadgetman Formula Junior

    Dec 21, 2008
    252
    Westlake Village, Ca
    Full Name:
    Curt W
    #1 gadgetman, Sep 30, 2012
    So....just had my '10 in for it's second annual service. It's been great and almost no problems, so just a regular service. They had it overnight and i got a call the next day....they started it up and it was a bit rough still. They wanted to do a Fuel Injection Service. Apparently there is new injection system in the Cali's (Audi's too) that tends to form a buildup on the back of the valves. Hmmmm. So, I did it and it makes a pretty good difference. They're giving me an additive also that I'm supposed to put in 6 months from now that may help as well.
    I asked if driving characteristics cause this. Answer was no. Apparently some high mile Audi's are showing this up as well.
    FYI.

    ps. Also, I noticed some 'bumping' on my window trim. I'll post pix later. This is going to get fixed as soon as the parts get in.
     
  2. Need4Spd

    Need4Spd F1 Veteran

    Feb 24, 2007
    6,678
    Silicon Valley
    #2 Need4Spd, Sep 30, 2012
    Yes, the direct injection system sprays fuel directly into the cylinders so the fuel doesn't wash over the valves any more and clean them in the process.
     
  3. hotbmwm3

    hotbmwm3 Formula Junior

    Jan 11, 2006
    554
    Melbourne and London
    Full Name:
    Owner -09 California
    #3 hotbmwm3, Sep 30, 2012
    It's a big problem on direct injection Mercedes as well

    Especially the 4.7 and 5.5 turbos
     
  4. MalibuGuy

    MalibuGuy F1 Veteran

    Sep 18, 2007
    5,892
    #4 MalibuGuy, Oct 1, 2012
    Recently noticed a rough idle. Spark plugs were changed due to soot build up
     

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