Thread: '99 Yukon misfires and won't start
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Old 03-03-2009, 08:43 AM   #5
mustangmike351c
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Re: '99 Yukon misfires and won't start
Quote:
Originally Posted by ZippyCT View Post
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What exactly is a spider?
the spider is inside the upper intake. it supplies the fuel to each cylinder. they sometimes leak causing extra fuel to go through the intake to the engine causing poor fuel mileage, misfires, rough idle
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