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Depsite being relatively uncomplicated devices, diesel particulate filters (DPFs) tend to be misunderstood. The resultant consequences can be extremely costly and inconvenient for the car owner. Blockages tend to be the most common complaint, highlighted by a dashboard warning lamp. If unresolved, the engine will enter a reduced power limp-home mode. In extreme cases, the engine can stall and fail to restart. So, what can you do about it?
You could blame the DPF – but that could be the wrong thing to do. The DPF is a relatively simple component and a blockage is very likely to be the symptom of another problem, which you must investigate, first. Worn/dirty fuel injectors, low compression, a holed intercooler, or even a split turbocharger boost pipe will…
