How can you determine if there is a kink or obstruction in a discharge hose causing low flow?

How can you determine if there is a kink or obstruction in a discharge hose causing low flow?

• A. Inspect for kinks, test with the line off to see if water flows freely, check pressure at the pump and the nozzle; straighten or replace hose as needed.
• B. Only check the discharge valve and ignore hose condition.
• C. Increase engine RPM to compensate for any obstruction.
• D. Replace water supply tank.

Answer: (A)

Low discharge flow is usually caused by something in the discharge path, like a kink or other obstruction in the hose. The practical way to verify and fix it is to inspect the hose for kinks or twists that pinch the line, then test with the line off to see if water can flow freely when the hose isn’t loaded by a nozzle or connected line. If water flows normally with the line off, the restriction is in the hose or nozzle and you should straighten or replace the hose as needed and re-test. Measuring pressures—checking what the pump is producing and what reaches the nozzle—helps pinpoint where the bottleneck is, so you can confirm the hose issue and ensure full flow once corrected. Increasing engine RPM won’t remove a physical obstruction, and replacing the water supply tank doesn’t address discharge-side flow if the hose is the problem.

Low discharge flow is usually caused by something in the discharge path, like a kink or other obstruction in the hose. The practical way to verify and fix it is to inspect the hose for kinks or twists that pinch the line, then test with the line off to see if water can flow freely when the hose isn’t loaded by a nozzle or connected line. If water flows normally with the line off, the restriction is in the hose or nozzle and you should straighten or replace the hose as needed and re-test. Measuring pressures—checking what the pump is producing and what reaches the nozzle—helps pinpoint where the bottleneck is, so you can confirm the hose issue and ensure full flow once corrected. Increasing engine RPM won’t remove a physical obstruction, and replacing the water supply tank doesn’t address discharge-side flow if the hose is the problem.