Return of the black smoke!

Discussion in 'Engine' started by Richard1973, Jul 7, 2017.

  1. Richard1973

    Richard1973 Hardcore MB Enthusiast

    Messages:
    211
    Joined:
    Mar 4, 2017
    Car:
    S210 320cdi Avantgarde
    Have finally ordered my replacement egr and manifold, but noticed the other day that the air filter indicator has gone to red. Reset it and straight away back to red indicating it's blocked but the filter is nearly new. I'm now wondering if there is another problem on the inlet side , but what? Any suggestions?

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  2. a111r

    a111r Hardcore MB Enthusiast

    Messages:
    1,602
    Joined:
    Aug 11, 2008
    Location:
    North East London
    Car:
    S123 240TD, S210 320cdi, S202 250TD.
    Mine did the same as yours.
    I found the air box pipe to the grille wasn't attached correctly and caused a sufficient flow restriction to turn the filter indicator red.
     
  3. OP
    OP
    Richard1973

    Richard1973 Hardcore MB Enthusiast

    Messages:
    211
    Joined:
    Mar 4, 2017
    Car:
    S210 320cdi Avantgarde
    Manifold is here and I have cleaned it out ready to fit. Interestingly, I decided today to change from my usual supermarket diesel and fill it with Shell. I have always been a believer that it isn't any different. However 100 miles in and it has made a huge difference! Less smoke, more power, smoother, and all this before I do the egr!

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