Why is there steam coming from the car hood?

1 Answers
DelWilliam
07/29/25 3:37pm
There are two possible scenarios for white smoke appearing from a car engine: (1) Incomplete fuel combustion. (2) Minor leakage in the cylinder liner or water presence in the fuel. Black smoke from a car engine may occur under the following circumstances: (1) Air-fuel ratio imbalance. (2) Decreased cylinder pressure. (3) Premature fuel injection timing. (4) Failure of the smoke limiter on the fuel injection pump. (5) Malfunction in the exhaust brake system. Here are some countermeasures: 1. Check if the expansion valve is damaged; if not, inspect the water pipes near the radiator and the radiator itself for leaks. 2. Do not attempt to start the vehicle again and promptly contact maintenance personnel for assistance.
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