1, models: Bora 1.8TAT
    Fault: driving a self-flame phenomenon, the engine immediately after the start flame, and then can not start.
    Check: VAG1552 query engine has a fault code: "16706 - engine speed sensor G28 no signal". Replace the speed sensor still can not start, but did not remember the fault code. Remove the 1-cylinder ignition coil and spark plug, start the engine found a high pressure fire, unplug the fuel rail into the oil pipe found no gasoline out, with the wire directly to the fuel pump power does not turn.
    Analysis: the fuel pump motor directly power is still not turn, indicating fuel pump damage.
    Exclude: replace the electric fuel pump, troubleshooting.
    2, throttle body too dirty lead to ASR light
    Model: Bora 1.8TMT
    Mileage: 35,000 km
    Phenomenon: sometimes start non-slip ASR alarm light is always bright, but no impact on the driving, the maximum speed, acceleration performance are normal.
    Check: use VAG1552 to read the three fault code: ① engine air flow meter signal is too low; ② G188 signal is not correct; ③ throttle idling speed limit.
    Analysis: throttle body caused by excessive opening degree is too large, to ASR lamp alarm conditions.
    Exclude: clean the throttle body, ASR alarm light goes off, this car tracking to the mileage of 45000km when the failure did not appear again.
    3, G212 fault code, need to set the exhaust gas recirculation valve
    Model: Bora 1.8
    Fault: engine idling jitter
    Check: use VAG1552 query to 2 fault code: ①G212 failure; ② 1 cylinder, 2 cylinder injector to ground short circuit accident. Read data flow idle throttle opening 1.9%.
    Exclude: use VAG1552 into 01-04-074, do the exhaust gas recirculation valve set, show OK, start and then query no fault, the engine jitter disappears.