Causes of poor ignition of automobile

Seven causes and solutions of automobile poor ignition;

1. The engine valve has serious carbon deposition: at the same time, it is accompanied by slight shaking when idling.

Solution: Clean the carbon deposit or fuel injector on the throttle valve, intake manifold and valve to solve the problem.

2. The ignition energy of the spark plug is weak: In order to save money, if the spark plug is not replaced after the maintenance period, the ignition energy of the spark plug will be seriously reduced, leading to a fire. At present, many models of engines are mostly in-cylinder direct injection, so the requirements for spark plugs are higher.

Solution: Replace the spark plug.

3. Insufficient low pressure in the oil circuit: insufficient oil pressure in the low pressure oil circuit directly leads to the secondary ignition of the engine. The specific reason is that the first ignition failed because the low-pressure oil circuit is building oil pressure, and the second ignition can be carried out once.

Solution: Check the fuel pressure regulator, gasoline pump, gasoline filter element and internal pipeline to eliminate faults.

4. Battery power loss: The failure phenomenon of battery power loss is more common.

Solution: replace the battery or find a car to get electricity.

5. Exhaust pipe blockage: Exhaust pipe blockage rarely occurs.

Solution: Replace the exhaust pipe.

6. Poor oil circuit: it can also be manifested as fuel system failure. Once the oil circuit is different, the engine can't ignite. If the spark plug fails, it will directly lead to fuel pump failure or oil circuit blockage. All these will lead to insufficient fuel supply, low concentration of mixed gas, difficult ignition of mixed gas by spark plugs, and natural ignition failure of automobiles.

Solution: Go to the repair shop for repair.

7. The atomization effect of the fuel injector is poor: if it is a cold start, the atomization effect of the mixed gas sprayed by the fuel injector is not good, and a large amount of liquid fuel enters the cylinder, which directly leads to the mixture being too rich, and then the spark plug is difficult to ignite, and the car cannot ignite.

Solution: Go to the 4S repair shop to repair the fuel injector. Million car purchase subsidy