.piston ring.. conroad bearing dn timing belt leading overhall ..head sy beli di kedai potong kereta..masalah sy bila sume dh siap timing kereta xdpt mesti melebih 1000 rpm dn compressor aircond x on bila timing bwh 2500 rpm… It's possible this issue is because of leaking on air-con duct. https://emiliovcdcz.blogprodesign.com/54614132/5-tips-about-masalah-kereta-semput-you-can-use-today