Here at Newhall, Sheffield's Independent BMW Specialists, we carry out Diesel Particulate Filter Cleaning (DPF) using a Forte power cleaning machine with the DPF insitu.

How does it work?

Using this machine we apply a cleaning agent directly to the front of the DPF allowing it to soak in.  The engine is then run, burning off excess small ash particles trapped in the DPF. Following this a flush agent is added to neutralise the cleaning reaction.

Don’t ignore an Engine or DPF warning light

Should you see a warning light showing that the filter is blocked, it should be possible to clear this by driving at speeds of over 40mph for approximately 30 minutes to complete an active regeneration cycle.

Ignoring a DPF warning light however whilst driving in a stop/start pattern, will encourage the build up of soot in the filter resulting in the car going into ‘restricted performance mode’ in order to prevent damage.

If this is not addressed quickly then driving at speed alone won’t clear the filter.  Short of enlisting a garage to do a manual or ‘forced’ filter regeneration, a DPF Cleaning Procedure can be carried out.

What prevents normal regeneration?

•    Frequent short journeys where the engine doesn’t get hot
•    Use of the incorrect type of engine oil – check your handbook
•    A problem with the fuel system or Exhaust Gas Recirculation (EGR) causing excess soot
•    A dashboard warning light or a diagnostic error code stored in the engine management system
•    Disregarding the recommended service interval
•    If the vehicle uses Eolys™ additive then a low level in the tank can prevent regeneration
•    Low fuel level; generally less than a quarter of a tank prevents active regeneration taking place

If you are in any doubt please don't hesitate to give us a call on 0114 242 1318 and we will happily give you a quote.