Re: Terriable backfiring
Check to make sure the spring on the moveable arm of the points is strong enough. It was mentioned in an earlier post. Hook a fingernail on it and pull it apart. It should give you a bit of a tussle.
A bad flexible wire under the upper plate can cause the backfire at high rpms too.
Did you recently have your carburetor apart? Leaving out the venturi will cause similar troubles.
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Dave / Lincoln Nebraska
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