Gas pressure washers have three major parts: a motor pump, a pressure hose and a trigger gun. Most problems with a washer involve these three components and understanding them will help ease maintenance and repair problems. Regular maintenance checks are essential to resolve any problems in a timely manner, and to avoid elevating the difficulty to repair. The machinery parts vary based on model, so the owner's manual is a helpful source for buying the exact parts such as nozzles, hose and pump. Prior to repairing a washer, always check the detailed manufacturer guidelines for your machine to understand its working mechanism. Seek professional help when unsure of the cause and/or repair. Here are some common problems with gas pressure washers, and how to repair them.
No Water Flow
If the equipment is not discharging water, then it might be a faulty hose or a blocked/broken nozzle. Remove the nozzle to check for any blockage. If any obstruction is found, remove the nozzle and then clean and install it. Replace the nozzle if it is not working properly. The hose can also be checked in a similar manner. Another possible problem that can cause water flow issues is a defective trigger gun, which can be easily replaced with a new one. Check to make sure there is no obstruction in the water supply.
Loss of pressure in the high pressure washer can be due to various reasons such as air leakage, a worn nozzle, a blocked inlet, limited water or leakage in the discharge valve. Check the nozzle, inlet, hose and discharge valves to diagnose the defective part. In the case of blockage, clean the associated part and replace it securely. If a part is broken or defective, it can be obtained from the manufacturer or a repair shop and replaced. Refer to the owner’s manual for detailed steps for your particular machine.
Loud noise or an unusual vibration from the pump can be caused due to worn or broken bearings and connecting rods. This can be solved by replacing these parts or installing a new pressure washer pump. Release trigger to free pump of any trapped air. If water is found in the pump, there might be torn pump head seals and repair will require a new pump. Do not allow the machine to run without water and check oil to ensure proper lubrication.
This can be due to a worn crankshaft seal or o-ring. Check the seals and replace any damaged o-rings. Only use oil recommended by the manufacturer, as others can be corrosive to the machine.
A damaged or improperly attached hose is usually the reason for water leaks. Check the hose and if any damage is found, replace it immediately. A faulty hose can be harmful to anyone operating the machine or in the vicinity of it.
The tires of a pressure washer should be checked regularly for proper air pressure and any damage. Replacement tires can be obtained from the manufacturer or a hardware store.
If the engine of the pressure washer stops working, you should seek professional help. Timely maintenance of your gas pressure washer ensures the proper functioning of the engine for a long period of time.