Holley 650

pantera1887Member

Can anyone explain how it would be possible to get the primary throttle plates too far open past the idle transfer slots and then apparently somehow richen the mixture enough so it idled OK but ran poorly just off idle. This somehow happened to a new Holley 650 that ran fine for two months and then slowly developed off idle to accelerate hesitation problems.

Mike

10/21/105:50 PM

Original Post

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