how to de-carbonize gas/fuel?

I use premium gas. Every time when my car sits for more than 6 hours and I turn on egnition it cranks and then dies, ALWAYS on the second attempt car turns on.

I contacted audi in my area and they told me to use cheaper gas???? If I put a diff gas my according to research, my car will $#@% up!

I recently contacted audi of america and they had told me to DE-CARBONIZE my GAS/FUEL?

Any ideas?

thnx!


2001 A4 1.8T Q tip

 

Guess you can try running a fuel injector cleaner. I prefer Gumout Regane.

 

Sounds like either a bad fuel pump, or loss of fuel pressure when your car sits such that you have to re extablish pressure before your car will start.