Fault phenomenon: onePassat(96 models) Ordinary cars do not get on after washing, checkspark plugWith oil and high-pressure fire,gasolinepumpYou can get the car when you take out the fuse. You can get the car when you pull the fuse when the fuel is almost burned out,engineThe rotating speed reaches 3000 r/min. Troubleshooting:PassatIt's GermanypublicThe cars produced by the company are generally 4-cylinder EFI cars on Chinese roadsengineAutomobile.There are many electrical components in the EFI engine. After cleaning the engine with clean waterignition systemHigh voltage line plugDistributorPlug, etc. or some computer systemsensorWater ingress into the plug may prevent the car from starting (especially engine speedsensorAnd Hall sensor). Due to the high voltage line andspark plugConnecting terminal, high-voltage line andDistributorWater ingress into the connection end or distributor cover causes high voltage leakage, spark plug ignition energy is weak and cannot be ignitedCylinderThe mixture in the car will not stop the car. When starting the engine, ignition and fuel injection are carried out simultaneously.Due to the weak ignition energy, the fuel mixture cannot be ignited, which is bound to causeCylinderThere is more and more fuel inside, which cannot be vaporized and startedStarterAs time goes on, the more fuel accumulates in the cylinder, the harder it is to start the spark plug when it is flooded.At this time, put the fuelpumpWhen the fuse is pulled out, the fuel pump will not be allowed to supply fuel, and the fuel injection nozzle will not inject fuel.Open the throttle valve to the maximum and start several times moreStarter, excess fuel fromexhaustThe system discharges some. When the combustible mixture in the cylinder reaches the combustible concentration, the engine can start.But this way, the excess fuel mixture in the car does not burn and entersexhaustSystem, easy to cause harm to three-way catalytic device.The best way is to remove the spark plug and let the surplus fuel spray out from the spark plug mounting hole. Clean the oil stain on the spark plug and the vehicle can start smoothly. The computer has many sensors and actuating elements on the engine, such as speed sensor, hall sensor, fuel injection nozzle, throttle control unit, etc. If the plug of these electrical elements is flooded, it may also cause the failure of not landing the vehicle. Special computer tester V. can be used for electrical part of Passat EFI engineA. G1551 is used for detection, which can clearly point out the fault of the engine computer system, detect the operating data of the engine and make basic adjustments to the engine.According to the condition that various faults can be solved by using OTC decoder, it is possible that the plugs of various sensors and actuating elements of the engine can not be landed due to water ingress, and the computer works under wrong signal conditions after landing, which makes the engine speed too high to reach 300Or/min and cannot be lowered.The plugs of various sensors are generally waterproof, but when washing the engine with clean water, it should also be noted that it is better to blow with compressed air after washing. If the speed cannot drop for a while, and cannot reach the normal speed, it needs to be repaired at a professional service station.After repair, use VA. The G1551 computer detector detects, clears the fault storage, and adjusts the engine to restore it to normal state before the vehicle can be used.
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