Car not starting

Asked by Nov 02, 2016 at 03:56 PM about the 2007 Audi Q7 3.6 Quattro

Question type: Maintenance & Repair

My wife drove the car (Audi Q7 2007 TDI) until it
finishes all fuel. Now the car is not starting.

The pump seems to be working fine. According to
the person who normal assist the car, it has air
inside the system. He connected to his computer
and it os reporting only fuel low pressure.

May you please let me know what are the probalble
causes and how can it be fixed?

2 Answers

94,875

Open the hood of your vehicle and locate the fuel rail. This is normally located towards the back of the engine bay, on top of the engine towards the firewall. Locate the Schraeder valve. This valve looks like a valve stem that you would normally find on a tire. This valve is a bleeder valve that will release pressure and purge air from the system if you loosen or remove it. On some vehicles, you may be able to press down on the valve to release pressure. Place a rag over the end of the valve, and either loosen the valve with the wrench or depress the center of the valve with the flat head screwdriver. You will hear air coming out of the valve, but you may also notice gasoline spraying out also. The rag is to prevent the gasoline from spraying all over the engine bay.

2 out of 2 people think this is helpful.

Schraeder valve not find. How do we found it?

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