High Exhaust Emissions.

Zafirocat

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Just taken my car (W140/S500) for MOT and it failed on emissions. The engine (147,000 miles) has been serviced plus new rotor arms and caps x 2. The cats and lamba sensor had been changed prior to my purchase of the car. The engine ticks over 'rock' steady and pulls like a train. Can anyone point me in the right direction please.
 

luders79

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W210 estate
What emissions are to high? CO, Lambda or HC . or all of them?
 

star

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were the cats really hot at time of testing? are they good cats and not cheapo's as the latter take longer to work and then only just. if early CSE injection, check base settings. :)
 
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television

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Is not this a case for an Italian tune up, I had to in Sweden in the winter to get it passed
 

bouncer

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Can you post the full failed emissions results. It will be easier to see what's going on.

sTeVe
 

Alex Crow

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is the car hfm-sfi or ke-cis? and we need those test values as that is a big clue. could be cats not hot enough, air leak, cis settings way way out, air mass sensor, lambda probes, ignition fault, mechanical fault etc etc. basically without the values this is the piece of string question - well how long is it?
 

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