Dear Forumites
I always thought that pinching the balancing tube between the carburetors of a 914/912 engine is a quick test to check whether carburetors are balanced, or not. When you pinch the tube and the idle goes rougher, the carbs are *definitely* not synchronized. When you pinch the tube and there's no change in smoothness, the carburetors are *probably* balanced.
My AMO disagrees, saying that a rougher idle when pinching the tube says nothing about anything. Everything I thought I knew about why that tube is there just went out the window.
Blue skies
Arthur
I always thought that pinching the balancing tube between the carburetors of a 914/912 engine is a quick test to check whether carburetors are balanced, or not. When you pinch the tube and the idle goes rougher, the carbs are *definitely* not synchronized. When you pinch the tube and there's no change in smoothness, the carburetors are *probably* balanced.
My AMO disagrees, saying that a rougher idle when pinching the tube says nothing about anything. Everything I thought I knew about why that tube is there just went out the window.
Blue skies
Arthur
