How the particulate filter works, how to diagnose it and which job to choose. And everything you need to know to open a DPF regeneration centre.
How the filter works, how to diagnose it and which job to choose.
What happens inside a DPF, why it cleans itself and why, after a few years, regeneration is no longer enough. The basics to understand the filter before working on it.
Warning light on and engine in limp mode: which data to read, which codes to check and which upstream faults clog the filter. A six-step procedure before deciding whether to clean or replace.
Four routes for a clogged filter, each with precise limits and risks. How to choose the right one and why removing the DPF is not an option.
Space, utilities, waste, figures and choosing the machine for workshops that want to wash DPFs in-house.
Service models, space and utilities, waste, equipment, workflow and how to find your first customers: what to know before bringing DPF washing into your workshop.
A simple method to estimate the margin per filter and how many washes it takes to pay back the investment, with a worked example to adapt to your own figures.
Vehicles served, volumes, drying, back-pressure measurement, filtration, controls and support: the criteria for choosing without oversizing or ending up short.
