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It gets overloaded with soot, the DOC face plugs, the DOC breaks up, the outlet cracks or gets otherwise compromised, the dosing injector leaks and runs too much fuel through the DPF.. pick your poison.

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Q: Why does a dpf go bad?
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Is isx cummins 435 engine good?

Depends on the year. 03 was a bad model year.. 04 started to get the bugs worked out. 05 - 07 were good years. 08 was a bit rough with the introduction of the DPF. 09 - 11 were somewhat better, but still, you had the DPF. 2012 to present, you have the SCR, which makes for a more reliable system than just the DPF, but also has a lot more which can go wrong.


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Cleaning a Diesel Particulate Filter (DPF) without removing it is possible, but it requires certain precautions and steps. Here are some options that can help clean your DPF: Drive at high speeds: One way to clean a DPF is by driving at high speeds for an extended period. This allows the engine to generate more heat, which can burn off any accumulated soot particles. However, this method may not be effective for severely clogged filters. Use a DPF cleaning fluid: There are several DPF cleaning fluids available on the market that claim to clean the filter without removing it. These fluids work by breaking down the soot particles and enabling them to pass through the filter. Follow the instructions on the fluid's label and pour it into the fuel tank before filling up with diesel. Use a DPF cleaning additive: DPF cleaning additives are another option. These additives are mixed with diesel fuel and are designed to reduce emissions and clean the DPF. Follow the instructions on the additive's label and add it to your fuel tank. Use a DPF cleaning service: There are professional DPF cleaning services available that can clean your filter without removing it. These services use specialized equipment and cleaning solutions to remove soot and other debris from the filter. David's Auto Repair may be able to provide this service for you. It's important to note that cleaning a DPF without removing it may not always be effective, and in some cases, replacement may be necessary. If you are unsure about how to clean your DPF, consult a qualified mechanic or DPF cleaning specialist for guidance. For more info, call us today 044 91 63 227.


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