ORIGINAL: ameyam
on this same engine and it never seemed to overheat or develop squishy compression then. The more I think about it the more I feel it is either a blockage in the carb or a fuel problem. Remember it continues to run even at 4-4.5 turns out of the HSN needle?
Ameyam
So then why ask for advice?
You are convinced that the prop sizes are OK.
If you do the math you'll see they are not.