Before you fit a new Diesel Particulate Filter (DPF)…

DPF Filter
8 Feb 2016

Before you fit a new Diesel Particulate Filter (DPF)…

Have you considered the following?

• Have you compared a picture of the faulty DPF with a picture of the replacement DPF?

• Check the vehicle history for any existing issues.

• Have a copy of the DPF Fitment Guide for the Professional – available from your local DPF supplier.

• Confirmed the reason for the apparent DPF failure, e.g. engine issues, injector timing, DPF pressure or flow, air leak, EGR, heater or glow plug, turbo engine wear.

• Inspect intercooler & associated plumbing for leaks or wear.

• Replaced the engine oil and filter, use low ash factory oil only.

• Check the used oil for any sign of contamination (thinning due to over fuelling/large clumps of carbon).

• Check the fuel for any signs of contamination e.g. water, bio-fuel or solids. Ensure low sulphur fuel only is being used.

• Ensure NO Bio-fuel has been used.

• Check catalytic converter efficiency, are there any signs of damage, heat discolouration or pitting of the substrate.

• Check all pressure and temperature sensors on the DPF.

• Purchase a new DPF fitment kit including gaskets, bolts and mountings.

• Ensured that no exhaust paste or silicone sealant is being used upstream of the DPF or Catalytic Converter.

• Re initialise Engine Control Units, reset ash level & adaptations and where necessary complete Engine Control Module restore.

• Check for vehicle Engine Control Module programming updates.
Check Adblue or Eolys (if applicable) at sufficient level.

• Completed a successful Forced Regeneration before driving the vehicle.


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