Is Walnut Shell Blasting Necessary for BMW?

[McAngelo]

Walnut shell blasting is relatively expensive. If your vehicle isn't experiencing issues caused by carbon deposits, such as engine shaking, increased fuel consumption, or sluggish acceleration, then walnut shell blasting isn't necessary. 1. Principle of walnut shell blasting for carbon removal: The process does use actual "walnuts" - specifically, walnut shells processed into powdered granules. These are then propelled by high-pressure air to create a high-speed flow that impacts carbon deposits, causing them to dislodge. 2. Important considerations: The service is costly. Walnut shell blasting is only suitable for cleaning carbon deposits on intake and exhaust valves, with limited effectiveness on other engine components. After cleaning, the walnut shell media containing carbon particles must be completely vacuumed out. Any residue may potentially cause engine malfunctions.