Hi
Ahh did'nt realise your vehicle was a diesel!:o The parameters I posted were relevant to a petrol engine test. Yours being a diesel is subject to a diesel emissions test which is done in a different way.The diesel smoke tester is measuring the density of the emissions (which is expressed in m-1).
The 'm' is for molar volume see this link
http://en.wikipedia.org/wiki/Molar_volume
The vehicle is revved up to max of six 'free accelerations' to get the average(mean) reading of the last three readings.I belive the current limits are as follows non-turbocharged engines no more than 2.50m-1 and for turbocharged engines no more than 3.00m-1.
Looking at the scan above the emissions have failed the test as the average is 8.91m-1:eek: There could be many reasons it may just need 'an itailan tune up' to clean the exhaust or could blocked air filter/fuel filter or faulty injectors or injector pump. Your need to establish why the emissions are high.
This is copied from the Haynes website :
The only emission test applicable to Diesel engines is the measuring of exhaust smoke density. The test involves accelerating the engine several times to its maximum unloaded speed. Note: it is of the utmost importance that the engine timing belt is in good condition before the test is carried out.
The limits for Diesel engine exhaust smoke, introduced in September 1995 are:
Vehicles first used before 1st August 1979: Exempt from metered smoke testing, but must not emit "dense blue or clearly visible black smoke for a period of more than 5 seconds at idle" or "dense blue or clearly visible black smoke during acceleration which would obscure the view of other road users".
Non-turbocharged vehicles first used after 1st August 1979: 2.5m-1
Turbocharged vehicles first used after 1st August 1979: 3.0m-1
Excessive smoke can be caused by a dirty air cleaner element. Otherwise, professional advice may be needed to find the cause.
original link
http://www.haynes.co.uk/webapp/wcs/s...atalogId=10001
HTH