Help w/FE 390 slight smoking one exhaust pipe. Some black oil on 2 spark plug threads

[jerry clayton]

#5 and 8 get fuel from same side of carb so if it smells like fuel probably a issue with the carb--

Also-------the way the spark plug wires were routed on the left side created issues after tune ups , etc---------the factory routing of the left side wires separated them in the loom spacers 7-5-6-8 to keep 7&8 from cross firing---------sooooo when the dudes tuned up or redid their plug wires and put them 5-6-7-8 then they had 3 wires in the wrong location with only #8 firing when it should--this would go pretty much unnoticed because checking tune up with timing light was on #1 cyl and it would be ok--------So please check your wire routing and positioning--------


Also could be an issue with valve seals and oil getting in from exhaust valves---intake leaks would show on plugs----------and where in the manifold does your PVC hook up?????????

And could be all of above

And as for carb cleaner around ports on an FE doesn't work as ports are completely under neath valver covers-----an issue common only to FE engines