Ive got a 99 a6 w 2.8 that i recently purchased to fix ad ot had been hit by a deer. Got it all done and went to start it... Nothing for first 4 attempts. After that id get few cylinders to fire for a second then nothin. Then it would start idle half a second and stall. I put 5 gallons fresh 91 non ethanol and it started and ran fine drove it around a bit blah blah blah then today i get in it to move it and it ran fine. I was backing up wheel fully turned one way (no power steering at the moment due to cracked resevoir) and it stalled. And wont start again Thinknit could be bad gas? Fuel pump? Fpr? What should i test? Thanks alot guys!!