Actually, it's not.

If you're familiar with the needle settings of a nova carb then here they are.


HSN - just a tad richer than 4.5 out (factory settings are 4.5).
LSN - 2.75 out (factory settings are either 2.5 or 3.5, I hear one thing from one person and something else from another. The engine won't even start and idle at 3.5 turns out)

The idle is approx .5mm open. it is a nice low, smooth idle.

And again, once I get past that initial launch, this doesn't seem to happen anymore (from my recollection).





And if it were a lean condition on top end, wouldn't I see some signs. For instance, when I take off, blue smoke all the way up til it dies. I wouldn't think I would have that much smoke if it were rich. Always, it seems there would be some hesitation as well. Just my thoughts.


I am starting to lean more toward an issue with the tank and pressure line system b/c it seems to always happen right after the tank has been filled.


any other suggestions or attempt at diagnosing the issue?