My 2003 Porsche Boxster Shas difficulty restarting after a full tank refuel.
Located in New Hampshire , US . Takes several attempts to restart
Runs fine otherwise after the refueling event. Any observations or
suggestions ?

 

same thing happened to my 03 boxster about a week ago....after filling drove 3-4 miles home...then started up and failure to start, gave it about an hour and it started after some coaxing...however smelled like it flooded....no check engine light rough low rpm idleing....took it to the dealer, check engine light came on.....he said it sounded like water in gas...got valvoline water remover from autozone...put it in...cel reset...and problem solved.