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• Topics about BRAKES
• Topics about CARBURETOR
• Topics about STARTING ...
• Topics about CHARGING ...
• Topics about TRANSMISSION
• Topics about ELECTRICA...
• Topics about TIMING/VA...
• Topics about FUEL SYSTEM
• Topics about COOLING S...
• Topics about Suzuki Mu...
• Topics about life adve...
Hesitation, stumble or misfire that occurs when the engine is under load can be caused by a faulty power valve inside the carburetor. A carburetor uses intake vacuum to pull fuel through its metering circuits. As engine load increases and the throttle opens wider, intake vacuum drops. This can reduce the flow of fuel and make the fuel mixture go lean, so the power valve has a spring-loaded vacuum-sensing diaphragm that opens to increase fuel flow when vacuum drops. If the diaphragm has failed or the valve is clogged with dirt or fuel varnish deposits, it must be replaced. A new power valve diaphragm is usually included with a carburetor rebuild kit.
5 авг 2020