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HomeRepair HelpRyobi RepairRyobi Pressure washer won't start Repair
Ryobi Pressure washer won't start
Won’t your Ryobi gas pressure washer start? The spark plug is the most likely cause. Inspect it for a cracked porcelain insulator, burned electrode, heavy carbon buildup, or no spark while the engine is cranking. Replace the spark plug if it fails a spark tester. Next, check the carburetor, especially if the pressure washer has been stored with fuel inside. Stale or ethanol-blended fuel can leave a sticky residue that clogs the carburetor and prevents the engine from starting. Clean the carburetor with carburetor cleaner, then rebuild or replace it if cleaning does not restore operation. If the spark plug works, test the ignition coil, which supplies voltage to the plug. A defective ignition coil can cause a pressure washer not starting or a power washer that won't turn on. Finally, inspect the flywheel key for damage if the engine stopped suddenly after hitting an obstruction. A sheared key can prevent proper ignition timing. Enter your Ryobi pressure washer model number to find the exact replacement spark plug, carburetor, ignition coil, or flywheel key for your machine.
01 - Ryobi 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.
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02 - Ryobi 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 evaporate, 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.
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03 - Ryobi 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 plug 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.
Common
04 - Ryobi 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 washer 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.
Common
Frequently Asked Questions
Why won't my Ryobi pressure washer start after sitting?
How do I test the spark plug and ignition coil when my pressure washer won't start?
What else should I check if my Ryobi pressure washer is not starting?
How do I find the correct Ryobi pressure washer replacement part?
What safety steps should I follow before repairing a Ryobi pressure washer that won't start?
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