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Discovering water in your pressure washer pump oil and figuring out how it got there can be a frustrating process. It can be caused by any number of reasons, and you have to figure out the problem and fix it, because if you just clean out the crankcase and go right back to using it, then water will find its way back into the oil.

So you grab your pressure washer for the first time in months, hook it up, turn it on, and... nothing. If there is no water flowing at all, then the check valve is likely to blame. 

If you live in an area with cold winters, it is important to winterize your pressure washer at the end of each season, specifically before the first freeze.

White milky oil in your pressure washer pump sight glass typically means one thing: contamination and water in the oil. While oil changes are a routine part of pressure washer maintenance

After using your pressure washer, you may notice that the oil in the sight glass looks bubbly or frothy. This can be alarming, making you think water has somehow gotten into the oil. There is a simple explanation: pressure washer oil will become frothy from the high-speed operation of the pump.

An idle-down pressure washer refers to a type of pressure washer that features an automatic idle control system. This system allows the engine of the pressure washer to idle down or run at a lower RPM when the trigger on the spray gun is released.