atc 70 stumbles

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06-13-2010, 06:41 PM

red kaw 84

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atc 70 stumbles

atc 70 with cam and better air cleaner stumbles when I give it throttle, cleaned the carb and new air filters and points. any ideas?

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06-13-2010, 08:14 PM

Doctorturbo

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My WAG, sounds lean to me. Pull the choke on partway and see if the stumble goes away. If so, fatten the main jet up.

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06-18-2010, 05:40 AM

drjoe171

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is the spark advance stuck by chance?

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06-19-2010, 12:05 PM

red kaw 84

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Went bigger on the main and that cured it, thanks.

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