Toyota Corolla car can not be a cold start

     A mileage of about 138,000 km, assembly 1ZZ engine 2005 Toyota Corolla sedan. Customer reflect: the car stalled vehicles placed for some time, for the first time does MST-9001D not start, repeat start after two or three times to be successful.
     Failure Analysis: According to the customer said the vehicle is placed over 20min, and she was unable to start the vehicle again, two consecutive times to start the vehicle. The reason for this failure is probably generated by poor fuel oil or ignition system. First check the vehicle fuel pressure, fuel pressure test gauge installed gasoline, start the engine oil pressure is 320kPa, normal. After a slow flame fuel pressure drops to 0kPa, leak quickly, without keeping oil. Hydraulic test after suspected petrol pressure regulator valve failure, replace the fuel pressure regulator. After fgtech galletto 4 v 54 starting the engine stops when the fuel pressure is 320kPa, after the flame fuel pressure dropped to about 200kPa not move normally.
     Troubleshooting: Replace the problem resolved petrol pressure regulator valve.
     Failure revelation: the rational use tool that can quickly solve the problem.
     Failure Comments: This is a very simple fault, but if the idea is not clear, check, determine it is not necessarily able to quickly find the root of the problem. So we need to have a correct diagnosis of ideas, while rational use of equipment, so as to do more with less.

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