Troubleshooting a Gas Pressure Washer


Gas pressure washers are a great way to clean the concrete of your home, your vinyl siding and even remove paint from the side of your house as preparation for a repainting job. Gas-powered pressure washers are a reliable tool around the home. Like most mechanical instruments though, problems can arise, and knowing the correct troubleshooting steps to get your pressure washer started again can save you time and money.

No Power

  • If you are experiencing a cut out on your pressure washer first disconnect the spark plug, then check the gas tank to make sure the levels are full. If the gas is not filled, do so. If there is plenty of gas in the pressure washer's tank, look at the oil levels as well. If they are low, you should refill. Many gas power washers have automatic cut offs when the gas and oil are too low. As a general practice, check these levels before using your washer. Running an engine on empty in regards to either of these fluids is bad for whole unit.


  • If you are having issues with the wand leaking, check to make sure the O-ring that holds the hose onto the wand is secure. If it is, check to make sure there are any cracks in its structural integrity. If there are leaks coming from the hose, turn off the pressure washer immediately. High-pressure water can be extremely dangerous, especially when bad hoses are involved. Replace any leaking hoses through the manufacturer. You can prevent holes in your hoses by running pressure washer detergent through the hoses after every use. This frees up debris and build-up.

Detergent issues

  • If the detergent is not dispensing, make sure that you have the correct nozzle on the end of your wand for detergent dispersion. Some manufacturers provide a specific nozzle head for this purpose, and detergent will not disperse without using it. Check your owners manual to find out the specific of your model. If the nozzle is correct, make sure all the tubes are properly intact. Check to make sure any filters are clogged. If they are, run warm water over them to free up the debris.

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