![]() To prevent this, ensure that the valve isn’t stuck halfway between open and closed.ĭegraded gasoline can gum up and corrode the carburetor in your machine, restricting gasoline from entering the combustion chamber. If it isn’t open all the way, not enough gas will get to the engine. Like with lawnmowers, gas-pressure washers typically require the fuel valve to be set in the open position. That’s why it’s probably a good idea to periodically inspect it for kinks or pinches. A pinched gas line can drastically cut down this flow, causing overheating to occur. ![]() Your pressure washer pump sends fuel from the gas tank to the engine. If your pressure washer is overheating, try loosening the cap slightly to see if this rectifies the problem. This means the gas won’t be able to freely flow into the engine. While a gas cap needs to be securely fastened to the tank, one that’s too tight could create a vacuum buildup. What Are Some of the Mechanical Problems That Cause Gas Units To Overheat? Gas Cap is Too Tight Although electric pressure washers can overheat, it happens much less frequently than it does with gas-powered units. ![]() If a user turns the pressure washer on without spraying, the switch will prevent the pump from running. Instead of a thermal valve, electric pressure washers have an automatic switch. This helps keep the pump from overheating. Cooler water then flows into the pump, lowering the temperature and closing the valve. A gas-powered pressure washer has a thermal release valve that opens when it reaches a specific temperature. ![]()
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