Diesel Engine Repair: How to Replace a Diesel Engine Particulate Filter Diesel Engine Repair: How to Replace a Diesel Engine Particulate Filter

What You'll Need
Screwdrivers
Particulate Filter

Diesel engine repair is generally similar to a regular gas engine. However, diesel engines are notorious for emitting particulates in the exhaust produced by this type of engine, whereas gasses are emitted from regular gas engines. The soot from diesel engines poses a new environmental concern, and in many countries in Europe, the installation of a particulate filter on the exhaust system is mandatory in an effort to significantly reduce or even eliminate the sooty particulate problem of a diesel vehicle.

Particulate filters come in a variety of of materials, from paper filters to metal and ceramic filters, and can be as simple as bolting it on to the existing exhaust pipe, to more complicated filters that are actually integrated to the exhaust system, necessitating the installation be completed by a professional. There are several variables to consider when determining whether or not to make this modification to your specific vehicle. You may want to discuss the matter with a knowledgeable service associate at a local dealerships to see if there is a particular type or specific models that are best for you particular vehicle. Ensuring that the filter that is selected is appropriate to use on your vehicle is critical. If it is not the right filter it can damage your emissions system and even damage or ruin your engine, which will lead to far more costly repairs.

Here you will find information on general replacement steps to install a particulate filter to your existing exhaust. If your particular type of filter is integrated to your exhaust, ensure that the work is done by a professional.

Step 1 - Remove Existing Filter

Locate the screws or fixtures that attach the existing particulate filter to the exhaust system. This may be located anywhere from the tail pipe to the engine compartment. Ensure you know what the part looks like and that you are easily able to identify it. In many cases when a particulate filter is present, it replaces the catalytic converter. Remove any fasteners that are holding the filter in place, and remove the filter.

Step 2 - Install New Filter

Read all the directions that came with the new particulate filter. Make sure you know which end of the filter is which, as installing the filter backwards could be catastrophic. Insert the new filter in the place of the old, and reattach any fasteners such as screws or clamps.

Step 3  - Test Drive

Take a test drive in the car once the new filter is in place. There should not be any excess noise from the exhaust (the noise will be unmistakable if the filter is not properly installed). Too, watch in your side view or rear view mirrors for any black smoke or exhaust coming from the car, or at least more than what originally was generated by the operation of the vehicle. If any of these are present, revisit the installation process.

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