Passat B5 hot car is difficult to start, so it has to start twice after stopping for 20 minutes. Throttle opening is 3, air flow is 3.3, and the nozzle has been replaced.

Throttle opening 3 is normal, as long as it is not greater than 5 degrees; The airflow is normal at 3.3, and it is also normal between 2.0 and 3.9. If the fuel nozzle is not blocked, there is no problem. You have replaced it. The problem is the gasoline pump.

You should call it the difficulty of starting a cold car. It takes twice to stop for a long time. I met it and it lasted for half a year. It suddenly turned into three or four times, indicating that the gasoline pump is going to break down. After I replaced the gasoline pump at that time, the fault was eliminated immediately, and it was easy to ignite once. Don't look at the computer values. I looked at the gasoline pump on the computer at that time, and there was no fault code. It's best to replace the gasoline pump assembly, and don't go to the 4S shop, which is contracted by 500 yuan.

Two vises that are easy to break in gasoline pump: 1) When igniting, ignite before the fault light disappears; 2) Only refuel when the gas meter gives an alarm, or refuel after running for dozens of kilometers, especially the latter. Get rid of these two habits, and the gasoline pump will live longer.