Why is there strong suction when opening the oil dipstick on a Cruze?
1 Answers
The reasons for strong suction when opening the oil dipstick on a Cruze are: poor sealing of the oil cap, damage to the exhaust valve, or the oil cap being tightened too tightly during car maintenance. Below are detailed explanations: Poor sealing of the oil cap: After the engine starts, it operates in a negative pressure state where outside air cannot enter. When opening the oil cap, a suction phenomenon occurs. If the sealing performance of the oil cap is not particularly good, the negative pressure phenomenon will be more pronounced. Damage to the exhaust valve: When the exhaust valve is damaged, it cannot control the exhaust gas recirculation volume. This not only affects the stability of engine intake but also causes engine idle vibration. In this case, it is necessary to replace the exhaust valve promptly to effectively resolve the issue of strong suction from the oil cap. Oil cap tightened too tightly: Because maintenance personnel tightened the oil cap too tightly, making it impossible to open by hand, tools can be used to open it. You can drive the car to an auto repair shop or a 4S store and leave it to professionals to handle.