When the semi-trailer goes uphill, increase the throttle and cut off the oil.

Does the subject want to ask "what is the reason for the semi-trailer to increase the throttle and cut off the oil?" Oil cut-off caused by oil circuit fault or line fault.

1, fuel injector and throttle will cause fuel cut-off. At this time, it is necessary to check the fuel injector and throttle, and if there is any problem, clean or repair and replace its components.

2. If it is checked, the fuel cut-off problem of the car during driving is not an oil circuit problem, but a circuit problem, in which the ignition coil and high-voltage bag will cause the car to cut off fuel. The fault light of the car should be displayed at this time. If it doesn't display, you can use the detection computer in the 4s shop to find the fault and repair and replace it. Fuel cut-off is the maximum speed set by the car. In case of collision, in order to prevent the engine from continuing to work, take oil cut-off protection. Its principle is an inertial switch, which will automatically turn off after collision to protect the engine.