Sick 92 Corvette
A little background on the car ....it is a 92 with 77.000 miles 6 speed.I have owned it for 5 years and the only thing I have done to it is change out one leaky fuel injector two years ago with a replacement that I got from Jon.
Normally while driving at highway speeds , the instant MPG readout runs around 30 mpg. When the problem started the MPG dropped to 22 or so.
I have only had time to check for leaky fuel injectors and did not see any sign of a leak.
Where should I start looking for the problem

or the following may cause hesitations:
Fuel Injectors
Fuel Filter
Fuel Pump
Plugs
Wires
ICM
Vacuume leak









