most cars this old , the CAT is missing rodded out or dead.
and all cars with no cat stink. all ! and lots of CO. (deadly)
tune it out doors.
the carb must be tuned to burn all the fuel.
and webers are the hardest to tune. (But run better than all, once tuned) the Harley CV carb is vastly more easy to tune. FYI.
we use a
wide band oxy sensor tool to tune carb now 100x more easy.
the tool was $1200 but not $140
what engine is there, G13? (most now, are upgraded)
the G13 has a mech, distributor. and the advancing weights must work like new. (not stuck"rust")
the dizzy must advance fully or carb tuning is a head to wall slam.
if the dizzy fails, it will not burn all the fuel. and will stink bad.
So using a timing light check the full advance.
the sammi FSM is free.
here it is.
http://www.fixkick.com/sammi-stuff/index.html
weber 101 tuning is beyond the scope of any post here.
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