when the engines cold if fires on the first turn
hard to start after driven or a hot engine. have installed new fuel pump on 1993 Chevrolet Corvette
did you replace fuel filter also
yes it has a new filter also, when its cold its a first crank start
I suggest you check the electrical resistance of the fuel injectors. Check cold then check again hot. Shorted fuel injector winding[s] can cause this symptom. The resistance readings will change with temp. however the individual injector resistances should all be the same or close to the same.