Have a 87YJ. New carberator, spark plugs, distributor and wires. For some Twain it’s running really rich which is causing full to burn up in my catalytic converter. My exhaust is also new so I know the cherry red exhaust is not clogged. I’m thinking maybe there is something electrical that I was supposed to take from old carb and put in the new one. There is a wiring harness on the old one that has no place to plug into on the new carb. I’m going on a month now trying to figure this out.