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

 

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pjsword, Potwin, KS, June 03, 2013, 17:27
 Rookie

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.

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  • Answer #1

    June 03, 2013, 18:02
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     Master

    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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