Group,
What would cause CO emissons to be at 6.372 and Hadrocarbons to be at 812. As you can imagine it failed MOT on these.
Thanks Mr Unhappy
Group,
What would cause CO emissons to be at 6.372 and Hadrocarbons to be at 812. As you can imagine it failed MOT on these.
Thanks Mr Unhappy
Too much petrol/ too little air.
The message from "unhappy" contains these words:
Cor, subatomic carbon!
Could you tell us what Escort it is? Carburetor - injection, what engine, that sort of thing?
Rich mixture. On a carbed model, faulty automatic choke.
Its a 1.4i (belive its a CVH engine) 1994 model, its only single point injection, the type that has the injector in the middle of the carbertor.
Cheers Unhappy
The message from "unhappy" contains these words:
That's a throttle body, not a carburettor!
Anyway, best bet would be the lambda sensor dead or dying. If there appears to the ECU be too much oxygen in the exhaust it'll pump more and more down making it burn incompletely leaving CO and hydrocarbons.
Alternatively the temperature sender might be dicky so the ECU thinks the engine's cold and is leaving it on "choke" - though of course injection engines don't actually have a choke. For that matter, carburettors hadn't had a proper "choke" for a long time either.
^^^^^^^^^^
There's the problem.
The message from snipped-for-privacy@italiancar.co.uk (SteveH) contains these words:
^^^^^^^^^^
Ah, Crappy Vile Horrid?
Nah, that's not the problem, it's the fact its CFI...horrid
Fiesta 1.4 with a webber, always passed with 1-1.20%co and 50ppm HC for 14 years and 180000 miles
The message from "Chris" contains these words:
My old petrol Maestro used to manage that with an SU!
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