Yes. Any modification a vehicle’s emissions system will result in an instant MOT failure. It may be possible to remove the “guts” of the filter and carefully weld back up the unit without raising suspicions. The removal of the GPF could also cause an engine management warning light (EML) – again, this is also an MOT failure.
1. Spray any debris from the filter with a garden hose. Set your hose to a gentle spray and wash off any large debris that you can see on it. Spray the filter right away before it dries after you have removed it from the system. When spraying down the filter, be sure to get in between the pleats on the filter.
The soot (carbon) is heated (either active or passive regen) and reduced to smaller particles which pass thru the filter and out to the atmosphere, so the same amount of soot is being put into the air with or without a DPF. Without DPF, the particles are big and visible, with DPF, the particles are small and invisible. (What you can't see, can
It's a at your own risk thing. DPF can be removed from the fire wall side. Tech can r&I engine in 16 hours that's flat rate labor. I challenge any mechanic to tell me the damn plastic drive coupler is not worn out loose and sloppy when we pull the engines out for DPF service!! So I look at pull engine, DPF service, replace drive coupler.
For those in the UK, click here to watch the episode. In a statement from Nissan to watchdog regarding this issue they said, “The 1.5dCi, 1.6dCi and 2.0dCi engines fitted to QASHQAI include a diesel particulate filter (DPF) to reduce emissions and help protect the environment. The functionality of a DPF may not be suitable for all customers.

Unplug all the connectors for the sensors instead of trying to remove them all. Also on the hangers instead of fighting with the rubber bushings, just unbolt all three hangers from the frame. Its much easier to slide the rubber hangers off with the DPF on the driveway with the help of some PB blaster.

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how can i clean my dpf without removing it