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Car failed MOT only on emission?

1994 Honda prelude, failed emission test result.
Exhaust emissions carbon mono oxide content after 2nd fast idle excessive.
Exhaust emission Lambda reading after 2nd fast idle outside specified limits.
The car has been parked for about 6 month and was services about 8 month ago. Also does a car register as an 1992 car require an emission test done?

All cars require an emissions test as part of the MOT.

If the emissions are failing, it could indicate you need a new exhaust system and the vehicle servicing again. The engine probably also needs retuning.

This entry was posted on Friday, October 16th, 2009 at 10:34 pm and is filed under car emission. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

7 Responses to “Car failed MOT only on emission?”

  1. i think 91 was when the cats were fitted so emmisions were started then [i think]…if its been sitting then it would need a gud run to clean it out…best case it wants a new air filter,worst case the cylnder bores are worn [new engine]..
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  2. All cars require an emissions test as part of the MOT.

    If the emissions are failing, it could indicate you need a new exhaust system and the vehicle servicing again. The engine probably also needs retuning.
    References :

  3. try redex injection petrol cleaner from halfords
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  4. ask the garage if they can adjust to lower emissions to within limits
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  5. Sorry, there’s no way out of an MOT test failure. Your options are limited but probably start with a tune-up plus replacement of any parts that cannot be tweaked. If you need a new catalytic converter, the cost may be hard to justify on a car of that age though Hondas are good cars so, unless it is mechanically clapped-out it might be worth it. Good luck.
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  6. Hey, this car would be great for the scrappage scheme.
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  7. Yes 1992 cars require an emmisions test. The first thing we do if a car is struggling with emmisions is to blast it up the road and do the test when it is nice and hot. If the emmisions are still too high a service with an engine flush and a fuel addative may help. It may even need a new lambda probe.
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    Motor trader.

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