What is the fatal flaw of the FA20 engine?
2 Answers
The fatal flaw of the FA20 engine is oil burning. Below are specific details about the engine: Definition: An engine is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, internal combustion engines typically convert chemical energy into mechanical energy. Brief Description: The engine block forms the skeleton of the engine and serves as the installation base for all its mechanisms and systems. It houses all the main components and accessories of the engine, both internally and externally, and withstands various loads. Therefore, the engine block must have sufficient strength and rigidity. The engine block assembly mainly consists of components such as the cylinder block, cylinder liner, cylinder head, and cylinder gasket.
I've driven several cars equipped with the FA20 engine, and this engine really has some design flaws that give me a headache. The oil pan is positioned too low, making it prone to accumulating debris and clogging the oil passages. Over time, the oil pump can't draw enough oil, leading to insufficient lubrication, internal component wear, and even cylinder scoring. In severe cases, the engine can be completely ruined. A friend of mine with a Subaru experienced this—sudden power loss on the highway, nearly causing an accident. The high-pressure fuel pump is another issue, constantly rattling during cold starts, and replacement costs over a thousand dollars when it fails. Idle is often rough and unstable, and a loose timing chain is a real nuisance. I recommend owners check the oil level and oil pan more frequently and clean them regularly to prevent major repairs. Neglecting these issues in daily use significantly increases safety risks. Don't wait until something goes wrong to regret it—safety should always come first.
