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Q: 1993 Grand Prix, starts but if you go on several short trips, it will not start. on 1993 Pontiac Grand Prix

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
It starts fine when cold or letting it cool down after several short trips, smells gas, runs rough. New spark plugs checked out my mechanic friend who could not find anything in codes -- you can really hear it running rough when following it.
(1) Answer
Just a guess! Black smoke from T-pipe? After running it awhile turn engine off let it sit a minute, pull vacuum hose off of the fuel pressure regulator and check for signs of gas in hose, if any found replace regulator. There should be code(s) stored in computer memory!!!!
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