How to Clean your DPF Filter
The sequestering of particulate matter (PM) in the diesel particulate filter (DPF) is the most important process in the emissions reduction system. But, when your DPF gets older, it can get clogged by the ash and the engine will consume more fuel, become less powerful and, in some extreme cases, experience serious damage. Knowing how to clean the DPF filter the right way is essential for engine longevity and keeping costs low.
Our collection of DPF Clamps and Gasket kits keep an air-tight, easy to remove seal for cleaning and regular maintenance.
Why DPF Cleaning Is Necessary
The DPF is designed to capture and store exhaust soot. However, after thousands of miles, the filter reaches a saturation point. If not properly cleaned, it can become clogged, triggering warning lights and forcing the vehicle into “limp mode.” This restricts engine power and can lead to expensive repairs.
There are two main methods for DPF cleaning:
Passive Regeneration – This occurs naturally when the vehicle is driven at highway speeds, allowing the exhaust to reach temperatures high enough to burn off soot.
Active Regeneration and Manual Cleaning – In cases of severe blockage, professional cleaning or even removal is required.
How to Clean a DPF Filter Properly
Step 1: Diagnosis
Use a diagnostic tool to check soot levels and assess whether regeneration is working. If the filter is too blocked, cleaning is necessary.
Step 2: Removal
Safely remove the DPF filter from the vehicle. This process may also require detaching clamps and gaskets. That’s where Tianjin YongYong’s durable Volvo Clamp Gasket Kit and MAN DPF Gasket come into play. Using high-quality sealing kits ensures there are no leaks once the system is reassembled.
Step 3: Cleaning
You can either use a professional DPF cleaning machine or apply a cleaning solution. The process involves:
High-pressure air to blow out loose soot
A heat cycle or solvent flush to remove stubborn deposits
Step 4: Drying and Inspection
After cleaning, allow the filter to dry completely. Inspect for cracks or damage. Replace gaskets and clamps if necessary using a trusted Cummins Clamp Gasket Kit to ensure long-term reliability.
Step 5: Reinstallation and Testing
Reinstall the DPF filter using the appropriate gasket kits. After securing all connections, reset the DPF status using a diagnostic tool and run the engine to confirm normal operation.
Tips to Extend DPF Life
Use low-ash engine oil
Avoid short trips when possible
Drive at highway speeds regularly to promote passive regeneration
Replace gaskets and clamps during every DPF service with OEM-quality parts