How can a car judge whether to punch in or not?

1. The cylinder gasket between two adjacent cylinders is burnt out: the car is weak, the engine is unstable, and the exhaust pipe "pops". The engine speed can't be increased during rapid acceleration, the carburetor (throttle) is stuck, and the exhaust pipe is shot.

2. If the space between the combustion chamber and the water jacket hole burns through, when the engine is running, bubbles will emerge when the water tank cover is opened, and in severe cases, water will be ejected from the exhaust pipe, emitting a lot of white smoke.

3. When other parts burn out, cooling water is squeezed out of the water channel or smoke escapes, resulting in hissing.

4. If the combustion chamber and oil passage burn through: when the engine is running, it is possible to flush the oil filter and make the oil leak.