After running on plane at 4500 RPM for 10 mins or so, when I am "no waking" at 900 rpm`s the alarm starts beeping real fast. Beep beep beep beep. Smoking alot and kind of chugges along.
When I run on plane no alarm and runs great. Water pressure running right where it shoud according to the guage. 18 psi.
How can I trouble shootn this?