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1990 Corvette Misfiring???

americanauto2007

New member
Joined
Jun 7, 2007
Messages
1
Location
Texas
Have a 1990 Corvette, base OHV motor. Engine is running rough and obviously misfiring. Disconnecting #8 injector plug or #8 ignition wire produces no change in engine rpm. #8 injector is getting pulse. #8 ignition wire is sparking. Plug looks good. This car has had numerous repairs in the recent past.... new plugs, wires, injectors, egr valve, etc. No obvious vac leaks. Compression is more than adequate. Fuel pressure is 43 lbs. Any suggestions????
 

scotch1

Well-known member
Joined
Feb 17, 2005
Messages
144
Location
Jackson,New Jersey
Corvette
1994 convert. 2002 C5 coupe
The first thing I wou;d check, if you haven't already, is the distrubitor cap and rotor. Also if you had recent work done on it, there is a chance that the firing order is mixed up, Just my idea for what its worth.
 

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