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Old 07-29-2013, 02:46 PM
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The air valve is opening too fast meaning the tension on the spring should be increased.


Turn the spring adjusting screw another 1/4 turn. Make sure to have the screw driver in the adj. screw when loosening the lock screw.

25" of vacuum at 1000RPM means you have a really mild camshaft.

Have you checked the air fuel ratio indications on the spark plugs?
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