Pressure Washers
Troubleshooting Chart - Gasoline Powered Pressure Washers Only (Continued)
Symptom | Possible Cause(s) | Corrective Action(s) | ||
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Pressure drops after period | 1. | Worn pump water seals | 1. | Check and replace |
of normal use | 2. | Nozzle worn | 2. | Check and replace |
| 3. | Valve worn, dirty or stuck | 3. | Check, clean or replace |
| 4. | Unloader valve seat worn or dirty | 4. | Check, clean or replace |
| 5. | Nozzle in low PSI position | 5. | Pull back nozzle to high pressure position |
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Pump noisy / pump runs | 1. | Pump drawing in air/low water supply | 1. | Ensure fittings are tight. Increase water pressure |
rough | 2. | Valves dirty or worn | 2. | Check, clean or replace |
| 3. | Worn bearings | 3. | Check and replace |
| 4. | Water too hot | 4. | Reduce temperature below 100o F |
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Pressure washer will not | 1. | Nozzle not pushed up far enough | 1. | Push nozzle forward as far as it will go. |
spray detergent | 2. | Clog, kink, or hole in detergent suction hose | 2. | If clean, unkink or replace hose. |
| 3. | Hose length too long | 3. | Use only hose length provided with initial pur- |
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| chase of pressure washer. Detergent suction will |
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| not function if more than once section of hose is |
| 4. | Lance not functioning properly |
| attached to unit. |
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| 4. | Remove lance from gun. If detergent is dispensed |
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| through gun, the lance must be replaced. If not |
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| detergent is dispensed through gun, remove 1” |
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| tapered detergent barb from pump. Clean the |
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| barb, and make sure that ball and spring are |
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| properly aligned with tapered portion of the |
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| spring facing the ball. The ball should be on top |
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| of the spring. |
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