Mazda Walnut Blast Cleaning In Bristol
I provide a quality mobile walnut blast carbon cleaning & EGR service for Mazda CX5, CX8, Mazda 3, and Mazda 6 vehicles with the Skyactiv-D 2.2 engine.
The Mazda Skyactiv-D 2.2 engine suffers badly from carbon build up all along the EGR circuit, through the intake manifold, the narrow intake runners and intake valve areas. Wet cleans, sprays, or HHO cleans have no effect on this level of carbon build-up, the only way to do the job properly is to strip and clean everything.
Carbon build-up symptoms can either be EGR related such as a P0401 EGR flow restriction code, or engine performance related such as juddering, lack of power, DPF regeneration frequency issues, heavy exhaust smell particularly when cold, or heavy fuel consumption. In many cases prior to my service components such as the throttle body, EGR valves, MAP sensor, and MAF sensor have been changed without fixing the problem as in a majority of cases these components are actually working ok and just require cleaning as part of a full decarbonisation service. The obstructive carbon buildup is buried deep inside the EGR and intake tracts and cannot be removed without the whole intake being disassembled and cleaned.
The whole system must be cleaned in one service as removing individual components, in particular the intake manifold will break the integrity of the carbon which would then flake away and be ingested next time the engine is started if not completely removed. This breaking of the carbon can be seen in the images below where the intake manifold has been removed.
At an average mileage of 70k, there will likely be 2kg of carbon to be properly removed from the EGR and intake system on this engine.
Another common code is the P0101 code, which although as a generic OBD2 code it relates to Mass Air Flow (MAF), on the earlier 2.2D engines (2012-2017) it is likely a sign of exhaust camshaft wear causing an air flow discrepancy which would not be cured in its entirety by an intake and EGR carbon clean.
The Mazda 6 and CX5 Skyactiv diesel is the toughest and dirtiest decarbonisation job out there but the results are very rewarding with customers normally seeing huge gains in performance, fuel economy and general driveability of the vehicle.
Some before and after walnut blasting images are included here for you to see how things will look inside your engine and the as-new results offered by using my quality decarbonisation service.
These are not exceptional cases, this is normal for these engines.
My full service involves walnut blast cleaning of the intake ports and valves, cleaning the Throttle Body, EGR valve, EGR Cooler Bypass Valve and interconnecting tubing and EGR Injection Tube. The EGR cooler is soaked and then ultrasonic cleaned with the internals coming back to a shiny clean condition.
The intake manifold is cleaned back to a shiny as-new condition inside and out.
See items A to H in the diagram here along with gaskets 1 to 9 which will be replaced.
Price £855 with no VAT to pay.
Included in the service are engine diagnostics and a check over for any signs of common problems that these engines can start to suffer around the same mileage such as injector seat leakage, turbo boost problems, vacuum pump problems, and oil pressure related problems.
Please note that this is a Bristol mobile-only service, although time-permitting it can generally be offered to customers within a 1hr drive of Bristol. A private driveway with power within 25mtrs is an essential requirement for this service to be performed.
My mobile service is very popular with car enthusiasts or those that want to see exactly what’s going on with their engine with the work being done at their home. All I need is an off-street location such as a private driveway, and an electric connection. Please just email or what's app message me as I'm normally too busy to take calls. Thanks, John.
This is a premium service, carried out with pride by a professional who has been living and breathing engines all their life and the results are very satisfying and rewarding with the potential of huge gains in performance, economy, and driveability.
Why do Mazda Skyactiv D 2.2 engines suffer so badly from carbon build up?
The high level of carbon build-up was largely due to Mazda's decision to go big on Exhaust Gas Recirculation EGR to levels that enabled this engine to meet the original Euro 6 emissions standard without the need for complicated and expensive Selective Catalytic Reduction SCR exhaust aftertreatment (Ad Blue injection). Not having to use Ad Blue saves most motorists hundreds of pounds a year. The only trade-off is the requirement for decarbonisation every 60-80 thousand miles. In the long run this is much more cost effective than filling and maintaining problematic Ad Blue systems, and engines with SCR still have EGR problems, only to a lesser degree. This lack of SCR system was applicable to the 2012-2017 versions of the Skyactiv D 2.2. After this period, SCR was added to meet further-tightened emissions standards, but yes, the carbon build-up still remained as the engine remained mostly the same design.
This page is specific to Mazda engines. For other manufacturers please visit my Walnut Blast Cleaning Page