CHAMPION 100302 Surging Wont Stay Running
| CONF | DIAGNOSIS | ACTION |
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93%
CONF
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Carburetor Assembly
The primary cause of surging is a restricted fuel flow through the internal jets, often caused by fuel degradation or debris. This creates a lean condition where the electronic governor oscillates the throttle plate to maintain RPM, resulting in the surging sound. Replacing the entire assembly ensures the integrated stepper motor and internal fuel circuits are within factory calibration.
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VIEW ON AMAZON
#CommissionsEarned
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4%
CONF
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Fuel Filter
A partially clogged fuel filter limits the volumetric flow of fuel to the carburetor bowl. During operation, the engine may run briefly until the bowl is depleted, causing the surging effect as the fuel level fluctuates, eventually leading to a complete stall when the flow rate cannot meet the combustion demand.
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VIEW ON AMAZON
#CommissionsEarned
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3%
CONF
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Spark Plug (F6RTC)
Carbon fouling on the insulator nose can cause intermittent spark tracking, leading to misfires. While misfires are distinct from fuel surging, they can mimic the symptom of 'not staying running' if the plug cannot consistently ignite the air-fuel mixture under the varying compression levels seen during governor adjustments.
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#CommissionsEarned
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DIY Repair Guide
Watch exactly how to replace the Carburetor Assembly.
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.