Help me diagnose a problem

[Kit Coyle]

Lippy...I had a similar problem but with a Holley double pumper fed with a
mechanical fuel pump. After checking coil resistance etc., I traced the problem
to junk between the float needles and seats which caused overfilling of the
float bowls and flooding. I pulled the needle/seat units and cleaned them. I
also found the floats set too high and reset them with the engine running
which is, I believe, better than setting the floats dry with measurement. The
filters were clean so I suspect alcohol must be eating away at something in
the carb. This happened a year ago and has not reoccured.

[Gaz64]

With the air cleaner off, if a bowl has flooding problem (needle and seat etc), then the booster venturis dribble fuel onto the throttle plates.

Then the engine needs to recover from the flooded condition at next startup, generally warm start.

Gary