Engine Miss Fires

Discussion in 'S-Class' started by Domingo Gonzalez, Sep 9, 2017.

  1. Domingo Gonzalez

    Domingo Gonzalez New Member

    This is related to a 2007 — S550

    Everything started with a miss fire condition randomly moving among cylinders # 1 thru cylinder # 4. An indication of combustion problem with these cylinders was seen when I checked the recently installed, new spark plugs, that now looks all black and like with years of use. These plugs where installed like 2 weeks ago. After replacing the 4 coils and all the spark plugs I have replaced the catalytic of that side of the engine, but still the random miss fire condition persist. I have already spent significant money trying to solve this problem, so l stopped to see if some of you guys can shed some light over the table.

    Thanks anticipated

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