How to Distinguish Between 3-Cylinder and 4-Cylinder Engines?

[DelAsher]

There are several ways to distinguish between 3-cylinder and 4-cylinder engines: 1. Open the engine hood and check the number of intake and exhaust manifolds. A 3-cylinder engine has three intake and exhaust manifolds, while a 4-cylinder engine has four; 2. Look at the displacement. 3-cylinder engines usually have a displacement below 1.0 liters, while 4-cylinder engines typically range from 1 to 2.5 liters; 3. Observe engine vibration. 3-cylinder engines vibrate noticeably due to the reciprocating inertia force generated by piston movement, which 4-cylinder engines can neutralize but 3-cylinder engines cannot; 4. Check the size and weight. 3-cylinder engines are smaller and lighter, reducing overall vehicle weight, while 4-cylinder engines are slightly bulkier.