Exhausts & CATs
Exhausts
A well-maintained system performs relatively silently in the background, keeping pollution down and fuel economy up. When it fails it’s the reverse. It’s noisy, polluting, increasing costs and an MOT failure. We service maintain and replace partial or total exhaust systems. If you’ve any concerns, come and see us.
Diesels & DPFs
All modern diesels have a diesel particulate filter (DPF) whose role is to keep out toxic and microscopic particles emitted by your exhaust. This very fine almost invisible soot can cause serious health problems if allowed into the air, so the DPF was compulsory on vehicles made since 2009. However, the DPF filter can fail and cause expensive problems if not looked after.
The DPF traps and holds the particulates and also burns them turning them into harmless ash in a process known as DPF regeneration. To do this it needs to reach a very high temperature which is accomplished by driving above 60mph for above twelve minutes. The problem is your diesel might spend its life on stop start journeys which rarely achieve this so the levels of soot can build up causing the filter to get blocked and the result is reduced economy, and engine misfiring. If you get a warning light referring to DPF or the risk of Diesel Filter Clogging, you need to drive above 60mph for above twenty or so minutes. If the light doesn’t go out, you need to come to us.
Should you see a warning that Diesel Additive Level is low then you must see us quickly. If this fluid runs out, then regeneration becomes impossible and the DPF clogs up fast potentially turning a minor problem into an expensive one.
Ad blue systems repairs and servicing
AdBlue is the brand name for an aqueous urea solution required by vehicles using Selective Catalytic Reduction technology to comply with Euro 6 legislation. Without it, the advanced pollution control technology installed in the exhaust system simply wouldn’t work. The SCR process converts harmful nitrogen oxides into harmless nitrogen and water.
We check and service catalytic converters to prevent problems arising.