Mot smoke test, petrol non cat.

[courty]

My 1989 Lancia failed mot on emissions.
CO and (HC)3 were way within % and so passed.
However, smoke test was fail.
I looked up mot on gov.uk link to 2017 mot emission doc...smoke test is mentioned only for diesel. For 1975-92 jpetrol ust basic idle emissions, but no smoke test is mentioned.
Is this a new thing for old petrol cars?

[courty]

Looking through the gov. document, the smoke test seems to be a visual test after a fast idle for 30 seconds.

If this is passed then the HC3 and CO tests are done. Not sure why they did the HC3 and CO tests if it failed the visual smoke test.

I will ask them tomorrow.

Basically I put some fuel cleaner in and took the car for a thrash...back again tomorrow for re-test.

Here is the fail sheet.

Edited by courty on Sunday 24th April 21:16

[V8covin]

Is the ask an mot tester thread still running on here ?
Might be worth a search and asking on that

[paintman]

www.gov.uk/guidance/mot-inspection-manual-for-priv...
Lists all the petrol defect categories lumped together which might be confusing.

(f) Exhaust emits dense blue or clearly visible black smoke for a continuous period of 5 seconds at idle Major
(g) Exhaust emits excessive dense blue or clearly visible black smoke during acceleration which would obscure the view of other road users Major

[AlexRS2782]

V8covin said:

Is the ask an mot tester thread still running on here ?
Might be worth a search and asking on that

Yep, in GG - link below if the OP needs it

https://www.pistonheads.com/gassing/topic.asp?h=0&...

[courty]

AlexRS2782 said:

Yep, in GG - link below if the OP needs it

https://www.pistonheads.com/gassing/topic.asp?h=0&...

Thank you I asked on there.