Fault diagnosis process of automobile ignition system not working

The ignition system of an automobile consists of a battery, a generator, a distributor, an ignition coil and a spark plug, which can provide enough voltage at a proper time to make the spark plug generate enough sparks to ignite the mixture in the cylinder, so that the engine can obtain the best combustion efficiency. It can be said that the automobile ignition system plays an irreplaceable role in the use of automobiles. Then this paper mainly leads you to understand the common faults and maintenance methods of automobile ignition system and how to maintain the automobile ignition system

Common fault diagnosis of automobile ignition system

1. How to adjust the ignition timing of traditional ignition system?

Adjustment method of timeless lamp

① First, adjust the contact gap of the distributor to a proper position as required.

② Find the compression top dead center position of cylinder 1. Remove the high-voltage branch line of cylinder 1. Remove the spark plug of 1 cylinder with spark plug sleeve, plug the spark plug hole with thumb or cloth ball, and then shake the engine crankshaft. When you feel the resistance of the cylinder, slowly turn the crankshaft and observe the alignment timing mark.

(3) After the above parts meet the requirements, turn on the ignition switch, loosen the fixing screws of the distributor housing, turn the distributor housing and close the circuit breaker contacts. Then rotate the distributor in the opposite direction until the contacts of the distributor are just opened, and then tiny electric sparks can be seen between the contacts, and then tighten the fixing screw of the distributor shell to adjust the octane number to the zero scale position; At this point, the distributor points in the direction of 1 cylinder position.

(4) According to the ignition sequence, insert the high-voltage distribution line on the distributor cover, and tighten the screws by hand to temporarily fix the distributor.

⑤ Start the engine and check the ignition timing. If the ignition system and oil supply system of the engine are adjusted at this time, the exhaust pipe of the engine should drip water to minimize the vibration and noise of the engine.

Timing lamp adjusting method

① Start the engine to warm up and reach the normal working temperature.

(2) Connect the two black clips of the ignition timing lamp to the positive and negative poles of the battery respectively, and clamp the sensor on the high voltage lead of the first cylinder.

③ Adjust the engine speed to the normal idle state, and illuminate the timing pulley with the ignition timing lamp to see if the mark on the pulley is the angle specified by the manufacturer (generally 6 ~ 10).

④ If adjustment is needed, loosen the distributor screw, align the timing pulley with the ignition timing, then turn the distributor (left and right) until the scale line is within the specified value, and finally lock the distributor screw.