The DPF traps soot particles in order to reduce emissions. The DPF has a limited capacity, so requires emptying periodically, this is achieved by a process called regeneration. The process cleanly burns off excess soot deposited in the filter, reducing harmful exhaust emissions, it is usually initiated automatically under certain vehicle operating conditions via the emissions control system, unless there is a problem with the running of your engine which may prevent this procedure taking place. It is important not to ignore any warning lights / messages regarding the engine/emissions control systems as it can lead to the DPF becoming excessively clogged, usually a 'forced regeneration' will then be required (which can only be carried out using diagnostic equipment). From experience 9/10 times the filter does not require replacement & there is an underlying cause as to why it has become clogged, once the underlying cause has been rectified it is usually possible to regenerate the existing DPF without replacement.
SCR is an advanced active emissions control technology system that injects a liquid-reductant agent (AdBlue) through a special catalyst into the exhaust stream of a diesel engine, which permits nitrogen oxide (NOx) reduction reactions to take place in an oxidizing atmosphere. AdBlue is the reducing agent that reacts with NOx to convert the pollutants into nitrogen, water and tiny amounts of CO2. It is important to monitor your AdBlue level as this will prevent the engine from starting if the level is too low. You will usually get a milage countdown to warn of how many miles are left before the engine will be prevented from starting. Just topping up the AdBlue level after this point will not enable engine starting, diagnostic equipment would be required AdBlue level checks & top ups (if required) are carried out during scheduled servicing.
One of the more expensive components in the exhaust system, can easily be damaged if your engine is not running efficiently due to common engine management faults, such as an engine misfire or over fuelling.
The catalytic convertor converts harmful toxic pollutants found in exhaust gas emitted from a vehicles exhaust system into less toxic pollutants by catalyzing a redox reaction (oxidation or reduction). If your engine is not running correctly, CO (Carbon Monoxide) & HC (hydrocarbon) output increases.Book Now Go to top
We will always obtain your consent before carrying out any work that has not already been authorised by yourself.
We will always retain faulty & damaged parts for your inspection.
We will always keep a complete record of your car & its history with us.
We will always report any advisories we see whilst working on your vehicle.
We will always explain the costs involved before undertaking any work on your vehicle & where applicable will give you a choice of genuine manufacturer parts & after market O.E parts. All parts we fit come with a years guarantee, unless otherwise stated.