Consistent cold start problem. Have to crank,stop then crank again to start it.

Thanks for your help! I you happen to know Audi's, could you tell me what the fuel pressure regulator might look like and where it usually is located (back in the trunk, near the fuel tank/fuel pumps, or under the hood near the engine? Thanks so much for your help. Aaron

Here ya go : https://images.search.yahoo.com/images/view;_ylt=AwrB8pZrD.hUTxIA06iJzbkF;_ylu=X3oDMTIyMWR2N2NlBHNlYwNzcgRzbGsDaW1nBG9pZAMxMzllY2E5NzdkYzg0NjY5MWU1YjdjZTY2MGQzOWFjYwRncG9zAzEEaXQDYmluZw--?.origin=&back=https%3A%2F%2Fimages.search.yahoo.com%2Fsearch%2Fimages%3Fp%3Dlocation%2Bof%2B2000%2Baudi%2Ba8%2Bfuel%2Bpressure%2Bregulator%26fr%3Dyfp-t-302-s%26fr2%3Dpiv-web%26tab%3Dorganic%26ri%3D1&w=1000&h=546&imgurl=12v.org%2Furs%2FAANvacuumhoses2B.jpg&rurl=http%3A%2F%2Fforums.quattroworld.com%2Fs4s6%2Fmsgs%2F21108.phtml&size=242.8KB&name=3B%2C+ABY+and+ADU%3A&p=location+of+2000+audi+a8+fuel+pressure+regulator&oid=139eca977dc846691e5b7ce660d39acc&fr2=piv-web&fr=yfp-t-302-s&tt=3B%2C+ABY+and+ADU%3A&b=0&ni=21&no=1&ts=&tab=organic&sigr=11k539kpr&sigb=14c986o8n&sigi=1103pd7vm&sigt=10gri4uml&sign=10gri4uml&.crumb=s47rKzaXkJ8&fr=yfp-t-302-s&fr2=piv-web