Faults that occur in the ignition system can cause difficulty starting the engine, and interruptions in the work of the cylinders, reducing power and fuel economy. Difficult start of the engine malfunction caused the following: the battery is discharged, a strong oxidizing conclusions battery cables and lugs; torn wires in a circuit of low voltage and loosely attached lugs wires; broken contact in the ignition switch, burned an extra resistor in the primary circuit of the ignition coil; zamaslilis, a strong oxidizing and overheat the breaker contacts, there was a breakdown of the isolation of the secondary winding of ignition coil, insulation breakdown capacitor plates, cracks in the rotor and distributor cap, deposited carbon deposits on the insulators and electrodes candles. Oxidized battery cable lugs and wiring is cleaning sandpaper. When broken wire in the circuit of low voltage wiring insecure mounting lugs, breach of contact in the ignition switch and burnout additional resistor in the primary circuit of the ignition coil does not include low-voltage circuit, which is why there is no deflection on the ammeter discharge during the rotation of the crankshaft starter . When checking the ignition system between the wires disconnected from the spark plug and the body of the car at a distance of 6-7 mm does not create a spark of high voltage. Serviceability of the circuit low voltage test indicator lamp. To do this, one wire from the lamp is connected to the body of the car, and the free end of another wire in turn relate to clamp circuit. If the chain is working, then when the ignition switch, the lamp is connected to the terminal of the breaker, will burn in open contact breaker. At open circuit resistor engine will embark starter, then stops working after turning off the starter. Ragged ends of the wires were intact and firmly connect them and propaivayut. Then insulate the connection. Tighten the connection terminals of wires. Faulty coil and ignition switch replaced. Oil and dirt from the surface of the interrupter contacts are removed by wiping them with chamois leather or thick cloth soaked in gasoline. Then contact was purged with compressed air that is necessary for the evaporation of gasoline Oxidized and scorched contacts is cleaning abrasive blade, needle files and sandpaper grit 140-170. In the breakdown of isolation of the secondary winding coil ignition decreases the voltage applied to the spark plugs. Winding insulation breakdown occurs in case of overheating, as well as during long work coil. To avoid overheating of the coil, can not leave the PA for a long time the ignition with the engine off. In the breakdown of isolation capacitor plates decreases its capacity, and therefore a contact breaker, a strong arcing, which causes a sharp decrease in voltage. To test a capacitor, and also remove the ignition coil high voltage drive from the central input distributor cap and leads its tip to the body of the motor at a distance of b-7 mm. Then remove the valve cover, include ignition and rotate the launcher arm crankshaft engine, it is necessary to periodically open and close contacts breaker. You can not rotate the crankshaft, but then for opening and closing the breaker contacts to be quickly turning the distributor rotor in both directions at an angle transmitted by the notches in the drive plate cam switch. With proper condenser coil and a working contact between the circuit breaker is a slight and irregular arcing and high voltage creates a spark length of 6-7 mm at each contact is opened. In the breakdown of insulation between the capacitor plates contacts observed a strong faith, and between the tip of high-voltage wire and the motor creates a spark intermittently even when the gap is less than b mm. Faulty ignition coil and a capacitor replaced. Cracks in the rotor and distributor cap, and pollution of the surface cause the leakage of high voltage on the vehicle body. Defective rotor and replace the lid. The deposition of soot on the insulators and the electrodes of spark plugs and causing cracks in the insulators cause leakage of high voltage on the body, and therefore do not cause sparks between the electrodes. Nagar with an insulator and the body clears the candles on the sandblasters. If the damage insulator candle replace. In the case of reducing the gap between the electrodes, they are often closed by soot and fuel. Interruptions in the engine cylinders are due to: failure of spark plugs or a large gap between their electrodes, small and large gap between the breaker contacts (with maladjustment), and severe pollution of burning the interrupter contacts, contact failure in a mount capacitor damage the rotor and distributor cap, Insulation secondary winding of the ignition coil, etc. Idle candle less heated compared to those employed and are usually contaminated by soot and fuel. Dead candle can be determined by turn taking out the wires from the distributor cap conclusions. If you disconnect the wire from broken candles, the disruptions of cylinders remain the same, ie will not change. The gap between the electrodes (depending on engine type) should be 0,5-0,9 mm. Him regulate podgibaniem side electrode and test round probe. A small gap between the breaker contacts increases sparks between them, and with a large gap reduces the time of the closed state of the contacts, which reduces the force of low voltage. In both cases, reduced voltage, and therefore there are disruptions in the creation of sparks between the electrodes of spark plugs. The gap between the contacts regulate and check the eccentric flat probe. Heavy pollution and burning of contacts, the breaker does not provide a reliable electrical contact with each of their closure, which causes disruptions in induktirovanii high voltage in the secondary winding coil. Violation of the contact mount capacitor is the reason for the strong arcing between the contacts breaker, and thus reduce the high voltage. If the damage of the rotor and distributor cap there is a leak high voltage to the vehicle body.
No comments:
Post a Comment