Question

knowledge fuel systems level 2
what type of pressure draws fuel through the lines in a mechanical system?
static
negative
atmospheric
manual

Explanation:

In a mechanical fuel - system, negative pressure (vacuum) created by the engine's intake process draws fuel through the lines. This negative pressure is lower than the atmospheric pressure, causing fuel to flow from an area of higher pressure (fuel tank) to an area of lower pressure (engine). Static pressure is not involved in the fuel - drawing process in this context, atmospheric pressure acts as a reference but is not the drawing force, and manual is not a relevant type of pressure for this function.

Answer:

B. Negative