In this series of articles, Liqui Moly investigates common vehicle problems and proposes a solution.
Problem: Clogged DPFs
Solution: Liqui Moly’s DPF Cleaning Kit
Assessment: Diesel vehicles that are primarily driven short distances can easily develop problems with their diesel particulate filter. This is because the soot particles are filtered out of the exhaust gas in the first step. During normal operation of the vehicle, the soot is then burnt off again. However, this automatic regeneration also requires a minimum temperature of the filter. And this is often not the case on brief journeys, so that regeneration is not completed or does not even begin.
The result: The filter clogs and the car goes into limp home mode or stops completely. The workshop can provide a quick remedy here with the DPF Cleaning Kit from LIQUI MOLY. It can be used to unblock filters clogged with soot without having to remove the filter at all. The kit includes a spray wand with five different tips, a pressurised spray gun, the cleaning liquid and the purge fluid.
It’s easy to use: All you need to do is remove the pressure or temperature sensor of the exhaust system. Then the probe can be inserted through the opening and the cleaning agent sprayed directly into the particulate filter. Its active ingredients dissolve the encrusted soot. After a few minutes of exposure time, the next step is to spray in the purge fluid. The whole thing only takes half an hour. After that, the regeneration cycle of the filter must be activated manually in order to burn the dissolved soot in the filter.
