Tuesday April 10th, 2018

Question 1

Water in fuel system

Answer 1

Arguably the greatest problem to fuel systems.

Question 2

Primary filter

Answer 2

The first filter in the fuel stream from the fuel tank.
Before the transfer pump.
Removes large particles.

Question 3

Secondary filter

Answer 3

The second filter in the fuel stream.

Located between the primary filter and the high pressure fuel injection.

Question 4

Gear pump

Answer 4

Positive displacement. ( one way check valve)

Pressurizes the output side to very high pressure.

Question 5

Diaphragm pump

Answer 5

Supplies fuel at low pressure (7 psi).

Engine camshaft activates this pump.

Question 6

Piston-type pump

Answer 6

Operated by the camshaft.

Can withstand higher pressures.

Question 7

Hand primers

Answer 7

Required for priming newly installed filters.

Also purges air from the fuel system when turned off.

Question 8

Roller vane pumps

Answer 8

A permanent magnet electric motor rotates rollers.

Two check valves are located in the this pump one on each inlet an outlet.

Question 9

Vane-type pumps

Answer 9

Pump that uses rotating vanes or rollers to pressurize fuel

Distributer-type pump

Question 10

Fuel transfer pumps

Answer 10

Used to move low-pressure fuel from the fuel tanks to the high pressure fuel system.

Question 11

Rack position

Answer 11

Changes plungers rotary position.