What is Automotive Engine Carbon Deposition? During the working process of the auto engine, the carbon and black gelatinous particles accumulated in the intake and exhaust valves, intake ports, combustion chambers, fuel injectors, and other positions inside the engine produced by unsaturated olefins and colloids in the fuel at high temperature are called carbon deposition. Carbon deposition will increase vehicle exhaust emissions and reduce engine performance. Sometimes, the falling of carbon particles at the valve position may block the normal opening and closing of the valve, resulting in the deformation of the valve stem. The existence of carbon deposition not only occupies a certain space of the engine, but also easily forms a hot spot (the temperature is easy to suddenly increase) under high temperature, leading to the generation of a second ignition point, causing the preignition detonation of the gasoline engine, and then affecting the working performance and service life of the engine.Why Choose AUTOOL Walnut Sand De-Carbon Cleaner ? AUTOOL Walnut Sand De-Carbon Cleaner adopts the physical Harmless Technology of walnut sand cleaning and is specialized in efficient and non-destructive cleaning of engine carbon deposition. The walnut sand is injected into the intake manifold of the engine through the high-pressure airflow. The walnut sand under high pressure and high speed will roll and collide in the closed intake manifold, forming a closed loop of continuous injection and suction. Repeat this process to brush off carbon deposits on the intake valve and intake pipe, and clean the carbon deposits without disassembling the main parts of the engine, which is fast, efficient, safe, and reliable.Safe and UndamagedWalnut sand can deeply remove sticky carbon deposits on intake manifold, intake valve and exhaust valve without damaging them. Walnut sand residual in intake pipe will go to ashes at high temperature after engine cranking to avoid damaging automotive exhaust systems & parts.External Air Source DesignThe use of external air source can provide continuous external power during the cleaning work, so as to promote the walnut sand particles to more strongly impact the carbon deposition in the pipeline, and more comprehensively complete the carbon deposition removal work.Built-in Filter ScreenBuilt in filter screen can separate the recycled walnut gravel from the carbon deposit for secondary utilization. PracticalityThe overall structure design is simple and light, beautiful and compact, and has strong practicability. With universal pulley, it can move 360 ° in all directions, which is convenient and labor-saving.Integrated DesignWhen the sprayed walnut sand impacts and deposits carbon, the walnut sand particles will be recycled in the equipment at the same time, without manual recycling, saving time and effort.High EfficiencyWhen the high-pressure air flow and walnut sand are injected into the closed engine intake manifold, they will roll and collide rapidly inside, forming a closed loop of continuous injection and suction, so as to quickly remove the carbon deposits inside.What is carbon deposition? There are some hydrocarbon olefin residues attached to the engine intake, cylinder when the fuel burns in the engine not completely. It residues change into a hard black shell in high-temperature conditions, called carbon deposition. Why need Clean Carbon Deposition? Carbon deposition will decrease the air-fuel ratio, cut down engine output power, increase fuel consumption, engine drastic shake on idle status all the thing will hurt the engine deeply. So normally we should clean carbon deposition after every 40000-50000 kilometer trip.How To Use the AUTOOL HTS558? Step 1: Open the headcover of AUTOOL HTS558 and pour it into walnut powder (need 2- 4KG ), press dust guard on walnut powder then close the cover. Step 2: Join the spray gun muzzle and recycle the hose together. (there is a hole in the recycle hose) Step 3: Remove the intake manifold of the engine, plug the spray gun into the intake, and turn the crankshaft to close the intake valve. Then connect the high-pressure air pump((not included)) to HTS558. Step 4: Connect AC power, and start clean. The process should last 1-3 minutes. (depending on carbon deposition circumstances) Step 5: Close AUTOOL HTS558, and check the cleaning result. Normally, the walnut powder can be reused 5-10 times. (depending on carbon deposition circumstances) MORE PRODUCTSMORE PRODUCTSMORE PRODUCTS 3 YEARS WARRANTY Delivery DetailsMORE PRODUCTS MORE PRODUCTS MORE PRODUCTS 3 YEARS WARRANTY Delivery Details