QuestionJuly 1, 2025

56. During normal operations the pump pressure starts to slowly decrease, what could cause this problem? a) The engine RPM could be dropping (loose throttle cable or plugged fuel filter). b) The cartridge in the bypass is wearing out. c) The nozzle could be plugging. d) A fitting on the high pressure hose could be leaking.

56. During normal operations the pump pressure starts to slowly decrease, what could cause this problem? a) The engine RPM could be dropping (loose throttle cable or plugged fuel filter). b) The cartridge in the bypass is wearing out. c) The nozzle could be plugging. d) A fitting on the high pressure hose could be leaking.
56. During normal operations the pump pressure starts to slowly decrease, what could cause this
problem?
a) The engine RPM could be dropping (loose throttle cable or plugged fuel filter).
b) The cartridge in the bypass is wearing out.
c) The nozzle could be plugging.
d) A fitting on the high pressure hose could be leaking.

Solution
4.6(331 votes)

Answer

All options (a, b, c, d) could cause the pump pressure to decrease. Explanation 1. Identify potential causes Analyze each option for its impact on pump pressure. 2. Evaluate engine RPM effect Option (a): Decreased RPM reduces pump pressure due to lower power input. 3. Assess bypass cartridge wear Option (b): Worn bypass cartridge may cause pressure loss by allowing fluid to bypass the pump. 4. Check nozzle condition Option (c): Plugged nozzle restricts flow, reducing pressure. 5. Inspect high-pressure hose fittings Option (d): Leaking fittings lead to pressure drop as fluid escapes.

Explanation

1. Identify potential causes<br /> Analyze each option for its impact on pump pressure.<br /><br />2. Evaluate engine RPM effect<br /> Option (a): Decreased RPM reduces pump pressure due to lower power input.<br /><br />3. Assess bypass cartridge wear<br /> Option (b): Worn bypass cartridge may cause pressure loss by allowing fluid to bypass the pump.<br /><br />4. Check nozzle condition<br /> Option (c): Plugged nozzle restricts flow, reducing pressure.<br /><br />5. Inspect high-pressure hose fittings<br /> Option (d): Leaking fittings lead to pressure drop as fluid escapes.
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