Holley 670 Street Avenger: idles at 2000rpm, backfires...

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#5 (permalink)

02-19-2012, 01:51 AM

Gaz64

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Join Date: May 2008

Location: Brisbane, QLD

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Posts: 2,797

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I'd bet your electric choke is stuck on.

With no other symptoms (lack of power or pinging), I doubt it is timing related.
A 2000 rpm idle has to be a large air leak, butterflies stuck open via the fast idle cam or some other issue (return spring etc).

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Gary

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