Mobile Walnut Blast Cleaning In Bristol

All modern direct injected engines - diesel or petrol suffer from heavy carbon build-up inside the intake manifold and intake runners and valves inside the cylinder head. This is because crank-case emissions and EGR gasses contain oil and carbon deposits that are fed back into the engine intake. Until recently most petrol engines were indirect injection and port-mounted fuel injectors would "wash" the valves with fuel as it entered the engine. Tighter emissions laws meant that manufacturers had to develop direct injection petrol/gasoline (GDI) systems, and this is where the problems started for petrol engines. Diesels have had this issue all along since EGR has been around. It's not a big deal but maintenance should be factored-in every few years or 40k miles.

People are often very shocked to see the amount of carbon build-up that is found inside their otherwise shiny looking engine. The problem is that if it is ignored then eventually large clumps of hardened carbon will fall into the air intake path and be ingested into the engine. If lucky this may go unnoticed for a few events but often this happens when the engine is under higher load so damage will occur. The carbon build-up can also interfere with the mechanics of swirl flaps and any restriction will stress the system and could lead to swirl flaps falling off, into the intake and then into the engine causing catastrophic failure. This is why vehicle manufacturers insist that it is performed every 40k miles to maintain warranties.

For the small cost and minimal inconvenience of having all the carbon removed at your own home it is simply not worth the risk of leaving it in there. Another factor is that carbon deposits are flammable and once alight they burn fiercely in the presence of fast flowing air. In any case it is not good to have a flammable substance trapped in the engine intake with hot exhaust gasses being recirculated. In extreme cases and normally coupled with an overheating event, it has been known for engines to "run away" out of control and self-destruct while running on flammable carbon-derived gases entering the cylinders from the intake manifold.

Intake Carbon Build-Up. It's easy to see how an engine could be damaged by this falling inside!

During the process we will remove your intake manifold(s) then use our special blasting equipment to blast walnut shell media into the most difficult to access areas like the intake valve heads and stems to clean away many thousands of miles of carbon build-up. Walnut shell particles strike the perfect balance between tough hard cleaning power and still being quite soft, so it is not possible to cause any damage.

Walnut Shell Blast Media

In the same visit your removed intake manifold will be thoroughly cleaned inside along with any other accessible components such as sensors, throttle body, and the EGR valve.

We will generally need access to your vehicle and a single mains electrical socket (within 40m) for 5 to 9hrs depending on number of engine cylinders and configuration.

A private driveway, private car park or similar off-street location is needed for this service to be performed.