If the replacement will cost more than half the value of a new pump, it’s better to replace it. Obsolete parts in an older pump can be challenging to find. If your pressure washer pump is over 10 years old, it may be wiser to replace it. If the oil is cloudy or dirty, water may have gotten into the crank tank due to worn-out seals. Running your pump without oil can cause it to overheat, requiring total replacement. Disassemble the pump, check the oil level and top it up. ![]() This problem is likely due to low oil levels. If the seal is fine, the inlet valve could be blocked with dirt and debris. First, remove the O-ring, check for wear and replace it if necessary. Low pressure is generally due to worn O-rings or a blocked inlet valve. If the culprit is a faulty unloader valve, the part should be replaced immediately to avoid damaging other components. First, try removing and cleaning the inlet filter. This issue probably means there’s not enough water going through the pump. Give the pump a once over and tighten any loose bolts. If that doesn’t help, the oil leak may be due to a loose fitting in the pump assembly. Disassemble the pump and replace any worn or damaged parts. If oil leaks from your pressure washer pump, one of the seals, gaskets or pistons may be damaged. They’re easily replaced by a professional. However, if you notice water leaking directly from the pump and there’s no noticeable damage, the internal piston seals are likely worn or broken. If water leaks from a crack in the pump itself, the entire pump must be replaced. Here are the most common signs of problems with your pump and how to troubleshoot or repair the issue. ![]() If your pressure washer pump fails, so does your washing system. As the heart of your pressure washing system, the high-pressure pump pressurizes the water stream, delivering efficient cleaning power.
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