What happened to the sudden idling of the exhaust pipe?

The reasons for the sudden burst of the in-situ idle exhaust pipe are: blocked oil circuit, poor patency, rail pressure, etc. The electric fuel pump is abnormal or the fuel filter is blocked or blocked for various reasons; Abnormal fuel injector: it can be its own quality failure, or it can be a variety of defects caused by foreign objects, such as blockage, poor sealing, aging of rubber ring, etc.

Air intake or idle speed control: stepper motor and throttle body are dirty or leaking. Sensors such as air pressure, temperature and throttle position are abnormal, and the data is incorrect; Too lean: The mixture is too lean or the fuel is too lean. Check the air intake part, oil circuit, etc.

Ignition wire: presbyopia or cracking of the ignition wire leads to electric leakage and insufficient ignition intensity. Or installation problems lead to poor contact. Suggestion: Replace the original ignition wire.

Heat dissipation: it is difficult to start, and the exhaust pipe will pat when starting, which is similar to that the mixture is too thin; Overheating (poor heat dissipation), high water temperature, etc. Suggestion: Check the cause of high temperature, eliminate the fault, or replace the cylinder gasket according to the actual situation.

Ignition (distributor, ignition coil, etc.). ): Too late: Overignition leads to incomplete combustion of the mixture. Suggestion: rotate the distributor housing by an appropriate angle against the rotating direction of distributor head to eliminate the fault; Disorder: It is possible that a single cylinder or multiple cylinders cannot work normally due to disorder of ignition circuit or incorrect installation (location). Suggestion: Reinstall the high-voltage line of each cylinder according to the ignition sequence.

Distributor failure: internal failure of distributor, such as centrifugal block stuck or other defects. The ignition time is not appropriate in advance, resulting in too late ignition, exhaust pipe? Shoot? . Suggestion: Repair by grinding and lubrication. Or directly replace (as the case may be).

Spark plug: Because the ignition efficiency of the spark plug is reduced, the unburned mixture rushes into the exhaust pipe for combustion. Shoot? . Suggestion: Check them one by one and replace the faulty parts (spark plugs).

The actual vehicle test results shall prevail. Find problems and solve them in time. Ensure trouble-free operation of the vehicle. (Photo/Text/Photo: Dong Peng) @20 19