Troubleshooting catalytic converters are: deterioration of the performance of catalytic converters; poor after three-way catalytic converter cores clogged exhaust, produce excessive exhaust back pressure, exhaust gas back into the engine. Include the following phenomena: 1, charcoal accumulation of pollution: after combustion of leaded gasoline will soon be three-way catalytic converter damage; after oil fleeing into the cylinder combustion engine oil phosphorus and zinc and other substances can contaminate catalytic converters device. 2, the ceramic core damage: long-term effects of thermal cycling, external impact and compression are likely to damage the ceramic core. 3, the ceramic core melt: when catalytic converters work properly, the temperature inside the catalytic converters generally up to 500 ~ 800 ℃. At the outlet than the inlet temperature of the high temperature of about 30 ~ 100 ℃. But the mixture of concentrated or incomplete combustion will exhaust CO, HC concentration is too high, it will increase the burden of three-way catalytic converter. The temperature rises too much, after a long time will make the three-way catalytic converter deterioration, even the molten carrier. Wuhan Connaught Trade Co., Ltd. is China National Materials Germany Connaught lubricants and Johnson & Johnson architectural glass membrane Hubei only designated agents. China National Materials Company will promise the lubricating oil to China, access to Mercedes-Benz, Volkswagen, BMW, Porsche factory certification, from the German "blood" technology from the track. Contact: Lee