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Why Won't My Pressure Washer Start?

The snow has finally melted and you're excited to do some outdoor spring cleaning. You take aim at the winter gunk with your power washer and nothing happens. If your power washer won't start after winter, you're not alone. We have plenty of explanations to account for your pressure washer not starting, which is why we created the Repair Clinic troubleshooting guide. Sometimes a gas pressure washer won't start after sitting simply because the gas has gone bad. In that case, you might not have to buy any new parts. Also, maybe you have corrosion on the spark plugs (another easy fix). The best place to start is our list of symptoms. From there we can help you diagnose the problem and make sure you're buying the right part for your model. Watch our installation videos to get the job done correctly the first time.
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Common solutions for: Pressure washer won't start
Solution 1:
Spark Plug
Inspect the spark plug for signs of wear or damage. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy carbon buildup at the electrode, replace the spark ...plug. To determine if the spark plug is defective, use a spark plug tester. You should see a strong spark between the tester’s terminals when the engine is cranking. If there is no spark, this indicates that the spark plug is defective and should be replaced.
Required Part
Pressure Washer Spark Plug
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Solution 2:
Carburetor
The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the pressure washer for a long period of time. Over time, some of the ingredients in the fuel may evapo...rate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and prevent the engine from starting. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
Required Part
Pressure Washer Carburetor
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Solution 3:
Ignition Coil
The ignition coil sends voltage to the spark plug while the engine is running. If the ignition coil is defective, the engine may not start. Before replacing the ignition coil, ensure that the spark pl...ug is working properly. If you have confirmed that the spark plug is working properly, test the ignition coil with an ignition coil tester. If the ignition coil is defective, replace it.
Required Part
Pressure Washer Ignition Coil
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Solution 4:
Flywheel Key
the flywheel key might have sheared in half. The flywheel key is a small metal piece which fits into the crankshaft and engages with the flywheel. If the engine stops suddenly due to the pressure wash...er hitting a hard object, the flywheel key breaks in half to prevent damage to the engine. To determine if the flywheel key is broken, remove the flywheel from the engine and inspect the flywheel key. If the flywheel key is broken, replace it.
Required Part
Pressure Washer Flywheel Key
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