I have a Ryobi 580030A pressure washer. I t was

stop using it and have it repaired before the pump is totallly destroyed.

https://www.ryobitools.com/landscapes/articles/5-Accessories-to-Make-Pressure-Washing-Easier

Most pressure washer i have ever come across, you just twist the nozzle on the end of the lance, there is normally two positions

Pump could be worn or unloader valve needs adjustment clockwise to increase pressure.

Could be a stock Pressure Washer Unloader Valve. You can find videos of how to remove and to clean it. It is not that difficult to do. Good luck.

These have very small openings. Try cleaning end with fine wire supplied with your unit. Any slight corrosion will cause your current problem.

Gray fluid is usually indicative of old oil with water mixed into it. First you have to determine if the fluid is coming out of the motor or pressure pump. Then change the oil in that, or both, and then watch the condition of the oil when you use the washer. With new oil, it won't turn gray but will get a milky coloration to it. There shouldn't be any way for water to get into the motor oil short of the engine being sprayed directly with high pressure water. If water is getting into the pump oil you'll have to check the seals inside the pump.

This is noticed on the Karcher washer and does not need any attention unless you are having a large spill over or leak. The oil oozes out when the pressure washer works for some time and is a result of a pressure leak when the washer is used for sometime.
I had seen this happen on mine for sometime , checked on all sides for any damage but there was none. So ignored but cleaned off the leak and was not seen then.

Release the chain brake and remove the bar and chain. Clean the side of the engine where the bar fits to, then start the engine and see if oil oozes out of the side port on the engine. If it does, then clean the small oil passages in the drive end of the bar that run out from the large holes to the chain groove on each edge. If the oil does not ooze out of the port, then the oil pump, oil line, or oil filter in the tank may need service. Many oil pumps utilize a plastic gear that takes drive from the crankshaft behind the clutch and are prone to stripping the teeth of the gear. Hope some of this helps!

water comes out slow, in the soap cycle, waster ooze out