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99 2x4 sport400 rev limiter bypass


Bignasty1

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This unit was brought to me this way with a new carburetor on it and read valves it fires up cranks fine but it won't accelerate I push the button in on the override it backfired and blow the head or loose from the spring at the head I'm figuring it's a CDI issue or bad switch or something I just want to bypass it all together and see what happens anybody out there got a clue I'm being told that it will live after I eliminate a wire which wire is what I need to know

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What make of bike is this Big ?

Do you know what the over-ride button is meant to be over-riding ? It could be a start inhibit over-ride...  so it can start in gear ?

And.. have you checked what the spark-plug is like, checked the exhaust isn't blocked, checked the fuel flow, or tried cleaning the carby ?

Have you checked the charging system is charging and regulating ?

Any of those things could give the no rev symptoms. 

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