What's the matter with the loud sound and high speed of MG 6 starting engine?

The reasons why MG 6 starts the engine with loud sound and high speed are: 1, and the throttle opening suddenly increases; 2. The choke leaks oil or is blocked; 3. The air-conditioning clutch slips or is damaged; 4. Air leakage in the air intake system; 5, the engine output power is insufficient.

It is normal that the engine speed is very high when starting automatically, because the engine can reach 1, 200 rpm to 1, 500 rpm instantly when the car starts. If it is in winter, the engine start speed of the car may be higher, otherwise it will cause the car to stall.

The relevant power marked on the nameplate of an automobile engine will indicate the corresponding speed. The working state of the engine at standard power and standard speed is called standard working state, and the engine speed is an index used to evaluate the dynamic performance of the engine. Generally, it is the most fuel-efficient state to control the speed at 2200-2500 rpm. The speed is too low, the car can't move, the speed is too high, and the fuel consumption is too high. The marked speed of the car is for reference, and the specific value needs to be judged according to the current speed of the car. 1, oil circuit problem: generally, the oil circuit problem is blocked, resulting in poor oil supply, which is characterized by engine jitter, unstable waiting speed and flameout during driving; In addition, the engine will shake when the oil pump fails. Judge the problem of the oil pump, disconnect the oil pipe, and check the related flow and flow.

2. Circuit problem: Check whether the positive fit is accurate. Generally, abnormal ignition is a positive matching problem; Check whether the spark plug is aging, whether the gap is the same and whether the gap changes; In addition, the abnormal operation of the distributor will also cause engine jitter.

3. Mechanical reasons: check whether there is abnormal noise in the engine running state and whether there is abnormal noise in the valve; Check whether the working condition of the belt is loose. In addition, excessive carbon deposition will also cause the above phenomenon.

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