Today I carried out, again, full power tests, once I have checked and cleaned all fuel pipes, distributor, pipes to carbs, carb bowls, floats, jets, pins, and ....still exactly same problem: no more than 4500 rpm and drop to 4000.
I have checked, one more time, in that position, the level of fuel inside bowls, more precisely, and the difference between left and right is surprising: 40 cc left, 19 cc right.
I observe as well a slight leak of fuel from rear part of the right carb, probably coming from the gasket, not much, but is dry in the other carb.
It, then, seems to be fuel delivery issue, as Roger says, in the right carb, with possibly a lost of boost or fuel in it, (as Rob tells).
Is possible that, if this is the matter, it causes so much drop in t he powerful of a Rotax 914 from 5.500 to 4000 rpm.??
Anybody have seen a case like this?
I will have the carbs overhauled, I think.
Thanks
