Join Date: Nov 2001
Location: North Central Illinois
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Re: weber ported vac
Cap off the vac port , time the engine , then reset the idle and it's mixture . You have to make sure it's on the idle circuit by backing off the speed screw when you adjust the idle mixture screw . If the engine is running correctly, it will idle down to about 300 rpm's with the speed screw backed off . Once lean best idle is acheived, then you can adjust the speed screw . Most engines will require a larger idle jet than provided with the carb from Redline . If there are any off-idle hesitations, go to a larger jet . If you need any, PM me , I have some in stock....