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HomeRepair HelpBriggs & Stratton RepairBriggs & Stratton Pressure washer won't start Repair
Briggs & Stratton Pressure washer won't start
If your Briggs & Stratton gas pressure washer won't start, the spark plug is the first part to inspect. Check for a cracked insulator, burned electrode, heavy carbon buildup, or no spark with a spark plug tester. A clogged carburetor is another common reason a pressure washer will not start, especially when stale or ethanol-blended fuel has been left in the carburetor during storage. Old fuel can evaporate into a sticky residue that blocks fuel passages, so clean the carburetor with carburetor cleaner and replace or rebuild it if cleaning does not restore operation. If the spark plug works, test the ignition coil, which supplies voltage to the plug while the engine cranks. A sheared flywheel key is less common but can also prevent starting, particularly after the engine stops suddenly or strikes a hard object. These checks address why your pressure washer won't start before you replace other engine parts. Enter your model number to find the exact replacement spark plug, carburetor, ignition coil, or flywheel key for your Briggs & Stratton pressure washer.
01 - Briggs & Stratton 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 - Briggs & Stratton 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 - Briggs & Stratton 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 - Briggs & Stratton 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 Briggs & Stratton pressure washer start?
How do I know if the spark plug or ignition coil is bad when my pressure washer won't start?
Can a clogged carburetor cause a Briggs & Stratton pressure washer to start and stop?
What else should I check if my Briggs & Stratton pressure washer will not start after a sudden stop?
How do I find the correct replacement part for my Briggs & Stratton pressure washer?
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