How to Clean Walnut Shell Blasting Intake Manifold?
2 Answers
Connect the coarse suction sand tube to the intake manifold. There is a small hole above the suction sand tube through which the blasting tube injects walnut shells into the intake manifold. The blasting tube sprays walnut shells into the engine's intake manifold. The high-pressure, high-speed flow of walnut shell particles will tumble and impact within the enclosed intake manifold. This process scours off carbon deposits from the intake valves and the walls of the intake manifold. Finally, the walnut shells and the dislodged carbon deposits are suctioned away by the sand suction equipment.
I'm quite familiar with walnut shell blasting for intake cleaning. When my car had sluggish acceleration before, the repair shop recommended this method. They first removed the intake pipe to expose the valves, then used specialized equipment to blast crushed walnut shell particles into the intake at high pressure. The soft walnut shells don't damage metal but effectively remove carbon deposits. After blasting, a powerful vacuum recovers the shells. The whole process takes about half an hour - after cleaning, my throttle response noticeably improved and idle became smoother. Be sure to choose a professional shop to avoid shell residue that could damage the engine. It's best done every 50,000 km, or more frequently for city-driven vehicles stuck in traffic.
