How Often Do I Need To Do A Manual Particulate Filter Burn On An Isuzu NPS?


Geoff, WA

QUESTION:


I bought a second hand Isuzu NPS and it has a particulate filter. The truck doesn’t have a user manual. How often do I have to do a manual burn?

ANSWER:

You don’t. The truck will do its DPF (diesel particular filter or “diesel particulate diffuser” as Isuzu call it) burns automatically. You don’t have to do anything.

The only time you do a manual burn is if the orange warning light illuminates on the dash. The photo below shows the sticker attached to our windscreen. This explains what to do if the orange light illuminates.

The instructions for the diesel particulate filter (diffuser) or DPD on a 2016 Isuzu NPS.
The DPD instructions on the windscreen of our 2016 Isuzu NPS 75-155.

You might also notice our sticker advises not to turn the truck off, if it’s doing an automatic burn. This is not necessarily true any more. Isuzu have changed their advice.

If you’re going to drive the truck again that day, turn the truck off as you normally would. The auto burn will pick up where it left off.






The only time Isuzu advise to let the burn finish is if you’re not going to drive the truck again on the same day. Let it complete the burn while the engine is still hot.

One other thing to keep in mind. The burn will not start until the engine reaches 70 degrees C. If the thermostat is not working properly, you can get a situation where the engine never reaches 70 degrees. So the burn can’t start.

So if you start having problems with the truck wanting to do manual burns, it’s worth checking the thermostat first.

Hope this helps.

Regards,

Andrew

P.S. If you want to find out more about our Isuzu NPS truck camper, go here.


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