Pressure washers are invaluable tools for keeping our homes, driveways, and outdoor spaces clean. According to a recent industry report, next year pressure washer sales may eclipse $2.3 billion. However, like any mechanical device, pressure washers can sometimes encounter issues that prevent them from starting. Let’s explore some of the most frequent reasons why your pressure washer won’t start and how to address them.
- Fuel Issues. For gas-powered pressure washers, fuel-related problems are often the culprit. Check that there’s enough fuel in the tank. You also want to make sure it’s fresh. Just like with lawn mowers, old or stale fuel can clog the carburetor and prevent the engine from starting. If the fuel has been sitting for more than 30 days, you may have to drain it and refill with fresh gas.
- Spark Plug Problems. A faulty spark plug can prevent your pressure washer from starting. Inspect the spark plug for signs of wear, corrosion, or damage. If it appears dirty, clean it with a wire brush and reset the gap according to the manufacturer’s specifications. If the spark plug is old or damaged, replace it with a new one.
- Oil Level. Many pressure washers have an oil sensor that prevents the engine from starting if the oil level is too low. Check the oil level and top it up if necessary. Be careful not to overfill, as this can also cause issues.
- Clogged Carburetor. Over time, fuel residue can build up in the carburetor, preventing proper fuel flow. If you suspect a clogged carburetor, try using a carburetor cleaner spray. For persistent issues, you may need to disassemble and clean the carburetor or have it serviced by a professional.
- Air Filter. A dirty air filter can restrict airflow to the engine, making it difficult to start. Locate the air filter and check its condition. If it’s dirty, clean it according to the manufacturer’s instructions or replace it if necessary.
- Primer Bulb. If your pressure washer has a primer bulb, make sure you’re using it correctly. Press it slowly 3-5 times before attempting to start the engine. If the bulb doesn’t fill with fuel, there might be an issue with the fuel lines or carburetor.
- Electrical Issues (for electric pressure washers). For electric models, check that the unit is properly plugged in and the outlet is functioning. Inspect the power cord for any damage. If you’re using an extension cord, make sure it’s the correct gauge for your pressure washer’s amperage.
By checking these common issues, you can often diagnose and resolve the problem yourself. Always consult your owner’s manual for specific troubleshooting steps and safety precautions. If you’re unsure about any repair or maintenance procedure, don’t hesitate to seek professional assistance to ensure your pressure washer remains in top working condition.If you have a pressure washing job you’d rather hand off to the professionals, please check out our pressure washing services page or get in touch for a free quote.
