I had something happen that produced similar results :
the choke cable casings were jumping out of the "seats" on the carbs... the
ends ended up resting on the outer edges just enough to make things go wonky -
was intermittantly running w/the choke on/off. Try completely disconnecting
the cables and run it through the paces to see if it makes a difference.
Re-adjusting the choke cables & making sure all was well w/ the casings seemed
to
have cured the problem.
good luck !
::::::::::::::::::::::
Laurie :-)
'70-SPL311
AzROC
Chandler, AZ
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