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Christopher TaylorAug 15, 2025
Why doesn't my Kärcher K 2.150 reach high pressure?
- DDr. Jessica HardingAug 15, 2025
If your pressure washer isn't reaching high pressure, it might be due to a few reasons. Ensure the diameter of the garden hose is adequate; replace it with a 16 mm (5/8 inch) or larger hose if it's too small. Check for any restrictions in the water supply, such as kinks, leaks, or blockages in the garden hose. Make sure there is enough inlet water supply by opening the water source fully. A clogged water inlet filter can also be the cause; remove it and rinse it in warm water. Lastly, verify that the spray wand is set to the high pressure position.