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HomeRepair HelpHart Pressure Washer RepairHart Pressure washer won't start Repair
Hart Pressure washer won't start
If your Hart gas pressure washer won't start, begin with the spark plug, the most likely cause of a pressure washer not starting. Remove and inspect it for a cracked porcelain insulator, burned electrode, or heavy carbon buildup, then use a spark plug tester to check for a strong spark while the engine cranks. Next, check the carburetor for blockage. Stale or ethanol-blended fuel left in the carburetor is one of the most common causes of seasonal equipment problems because it can evaporate into sticky deposits that prevent the engine from starting. Clean the carburetor with carburetor cleaner, or replace it if cleaning does not restore fuel flow. If your power washer won't start with a working spark plug, test the ignition coil and replace it if it fails. A sheared flywheel key is another possibility, especially if the engine stopped suddenly after hitting something. These checks can help diagnose why your pressure washer won't turn on or will not start. Enter your model number to find the exact replacement spark plug, carburetor, ignition coil, or flywheel key for your specific Hart pressure washer.
01 - Hart Pressure Washer 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 - Hart Pressure Washer 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 - Hart Pressure Washer 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 - Hart Pressure Washer 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 Hart pressure washer start after sitting with fuel in it?
How do I test the spark plug and ignition coil when my pressure washer won't start?
Could a broken flywheel key cause my Hart pressure washer not to start?
What should I check first if my pressure washer will not turn on or start?
How do I find the correct Hart pressure washer spark plug or carburetor?
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