Diesel emis­sions

Car Mechanics (UK) - - Mot Changes -

MOT testers must ei­ther re­place their diesel smoke me­ters, or up­date the soft­ware for the new tests. The main changes in­volve Euro V and VI emis­sions. As be­fore, the vis­ual check for miss­ing, or tam­pered with DPFS con­tin­ues and, if the can­is­ter has been cut open for le­git­i­mate rea­sons, the tester might re­quest that ev­i­dence be pro­vided of the work car­ried out. Sim­i­larly, any other emis­sions com­po­nent – such as an EGR valve and SCR cat­a­lyst – that is miss­ing, or de­fec­tive, will re­sult in a test fail.

The new lim­its ap­ply as fol­lows, ex­cept in cases where a smoke ‘K Value’ is pro­vided on the VIN, as pic­tured within the box on this Opel’s plate (see above right). If a value is pro­vided and it is higher than that of the MOT limit, the car will be tested ac­cord­ing to the lower value.

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