Toyota Camry engine ignition fault repair

         Symptom: a Toyota Camry sedan engine has fire signs, but not up and running.
         Troubleshooting: As the electronic control of the engine control system is more complex, but reliability is relatively high, we in principle easier issues first to be checked.
         First check whether the normal high-voltage arcing. Unplug the power lines were arcing single cylinder test, found the spark intense, bright, proof ignition system properly.
         Then check the intake passage is unobstructed. Remove the air filter, found scania vci 2 above the dust more, with high-pressure air after blowing installed, start the engine, the fault persists.
         Then check the oil. The oil pressure gauge connected to the fuel line, start the engine, the fuel pressure measured only 10kMPa (normal is between 230 ~ 250kPa). There is no leakage of pipeline inspection place, turn the ignition switch can hear the sound of the electric fuel pump operation; therefore believe may be due to clogged fuel filter or tubing, causing the hydraulic system can not be established. So replacing the fuel filter, clean lines, and use high-pressure air blowing, but still start after loading vain. Then retest oil is 110kPa, concluded that the electric fuel pump is damaged, can not afford to build pressure. Removed from the fuel tank fuel pump, fuel pump carefully observed a crack at the oil port, estimated fuel leaked from here, back to the tank, the test ran so decisively, the replacement of a new fuel pump, troubleshooting.
         Conclusion: EFI engine electronic control system reliability is relatively high, such as computers before traveling over 150,000 km may be faulty, so should do first encounter EFI engine failure foundation inspection, it is difficult to find fault after the first transaction. According to experience, EFI engine failure Piwis Tester II Updated occurred in the oil on the road, because the fuel injection system of high precision, high quality requirements for fuel, so the oil on the road most of the oil-related failures, such as the common fault "electric fuel pump enough oil." and "injector bad" are related to the fuel quality. Of course, this example is rather special, was asked by the driver learned that this car chassis had been scratched stones, may encounter the fuel pump, causing damage, the long-running, gradually severe that the engine will not start.
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