Lets consider, we are going in inclination. (ex:some where > x Degrees).
At this time, how carburetor will pump the fuel into the cylinder. Since of high inclination, it is very difficult for the fuel to climb into the cylinder right? Whatever it is trying to pump, will fall back into the sub (small reservoir) tank right?
I believe the same case for FI too.
Lets assume it is safe altitude and no problem for the air intake too.
May I know, how the system will take care of this situation.