I have a new engine install and my carb heat when applied seems weak. New exhaust system, new shrouds, new scat tubing. On the ground at 1800 rpm I get maybe 20-50 rpm drop; at 2000 rpm I get little or no rpm drop.
Two things; one is how tight of a seal do you folks have on the carb heat flap (does the flap have a rubber seal around it?) and second my new shroud on the new muffler is not a perfectly tight fit so maybe it leaks cold air in at higher rpms. Any thoughts of how to really check out the carb heat?
