Engine failures can usually be repaired, depending on the extent and type of damage. The type of fault can be initially diagnosed by observing the exhaust colour (black may indicate a rich air-fuel mixture, white may indicate coolant leakage, and blue may indicate oil burning) and abnormal sounds (such as valve tapping or bearing knocking). Minor issues like loose sensors or carbon buildup can be resolved by resetting the ECU (disconnecting the negative battery terminal for 30 seconds) or replacing spark plugs, costing approximately 200-300 Malaysian Ringgit. Severe faults such as damaged connecting rod bearings or blown cylinder head gaskets require professional repair, with costs potentially reaching thousands of Malaysian Ringgit. For routine maintenance, regular oil changes (recommended every 5,000-10,000 kilometres), using coolant and fuel additives that meet OEM specifications can prevent failures. If the malfunction indicator light flashes or is accompanied by an overheating temperature gauge or oil pressure warning, you must stop the vehicle immediately and call a tow truck to prevent further engine damage. Modern engine electronic systems are complex, so equipping an OBD scanner to read fault codes (such as P0300 for random/multiple cylinder misfire or P0420 for catalytic converter efficiency below threshold) is recommended, as it can accurately identify issues and prevent unnecessary part replacements by repair shops.
