Can the car still start if the connecting rod is bent?
3 Answers
If the connecting rod is severely bent, the car cannot start; if it is slightly bent, the car can still start. Below is relevant information about car engines: Classification: Based on the working method of the intake system, they can be divided into four types: naturally aspirated, turbocharged, mechanically supercharged, and twin-charged. Principle: A four-stroke gasoline engine mixes air and gasoline in a certain proportion to form a good combustible mixture, which is drawn into the cylinder during the intake stroke. The mixture is compressed, ignited, and burned to generate thermal energy. The high-temperature and high-pressure gas acts on the top of the piston, pushing the piston to perform reciprocating linear motion, and outputs mechanical energy externally through the connecting rod and crankshaft flywheel mechanism. A four-stroke gasoline engine completes one working cycle during the intake stroke, compression stroke, power stroke, and exhaust stroke.
I remember one time when my car's connecting rod got bent, which happened after driving too aggressively through deep water during a heavy rain. Upon starting, the engine made severe knocking sounds and wouldn't fire up at all—it felt like the crankshaft was jammed. Forcing it would only make the pistons hit the cylinder walls, causing more severe damage or even total engine failure. Once bent, the piston's movement path was completely disrupted, the crankshaft couldn't rotate properly, and the ignition system also failed. So I immediately gave up trying to start it and called for a tow truck to send it for repairs, which ended up costing a significant amount. It's important to avoid high-load operation and regularly check the cooling system to prevent similar issues. Safety always comes before regret.
While studying automotive knowledge, I learned about connecting rod bending issues. The connecting rod links the piston and the crankshaft. If it bends, the piston cannot move up and down properly, the crankshaft will get stuck, and the engine simply won't start. Even if it manages to turn over under extreme circumstances, it will produce tremendous noise and vibration, potentially burning out spark plugs or other internal components instantly. Bending is often caused by overheating, waterlogging, or improper maintenance. I recommend not attempting to start the engine and directly contacting professional repair services, as the potential risks are high. Regular maintenance of engine oil and the cooling system is key to prevention.
