Please help I have 1980 Biarritz 368 the motor is running super rich,I did spark plugs,cap,rotor,gas filter,air,oil,spark wires ,set timing at 10 degrees,check vacuum lines,I noticed spark plugs on rt side of motor are turning black the rt side is ok.i put new exhaust on I had to take it of from catalytic converter cause it was turning orange.it shoots blue flames out. Pipe from manifold,somebody please help what could it be.tim 973- 349-4941 or post please

 

If just one side shows black spark plugs you either have an injector running too long which is letting in too much fuel or an issue with fuel pressure. The issue with the converter getting hot and turning orange is due to all of the unburned fuel getting dumped into it.