grenjith7

Hi
Last month-end, i had a problem with my 2001 Audi A4 2.8Lv6 Quattro; i.e. it wasnt starting. Normally, i go to the Audi specialist, but it so happened that they were on vacation and I had to go to a local mechanic. He diagnosed the problem and faulty fuel pump and replaced the pump and filter. Now the vehicle starts without any problem. But issue is ; at times, it is not starting at the first crank esp; when the engine is cold.

From what I understand, it may not be holding the pressure in the fuel lines or is there any other reason?? what can cause all these. I did not have this starting issue earlier..

Any help is appreciated

Thanks in Advance

Renjith

600whpA4

The new pump might have a bad check valve allowing the fuel to flow back into the tank thru the pump.

To see if this is the issue you can try turning on the key for a few seconds before starting it up or you can put a fuel pressure gauge on the fuel feed line to see if the pressure has dropped to zero over night.

What pump did the shop put in?

grenjith7

Thank you for your reply. That Guy put in Meyle fuel pump. In the morning, if I turn-on the ignitio switch to the on-position and leave it thr for 5- 7 seconds and start, it cranks and start in one try...
Also, I have observed, that the mileage (miles per gallon) has dropped.