05-15-2009, 10:31 PM
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CC Member
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Join Date: Jun 2003
Location: Palma de Mallorca, Spain,
ESP
Cobra Make, Engine: Contemporary with 482 KC/SO, TKO600,IRS Jag/AMP, 3.54 Salisbury PL,
Posts: 582
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I do not know if the IDF's are much different than the IDA's, but I had on one body one side drawing more vacuum than the other. It had a twisted throttle plate shaft. I twisted the shaft back to to get both throttle plates in the same position both sides.
You also have to remove all the idle set screws except one. You may have some carb resting on the idle screw without you noticing and the throttle plates not closing completely on that one.
The float level is also important to check. The Webers out of the box are often misadjusted and need some attention.
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