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exaust leak= running rich?

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Old 03-17-2004, 01:59 PM
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exaust leak= running rich?
Would a header exaust leak cause your car to run rich?
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Old 03-17-2004, 02:01 PM
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yes. the 02 will pick up the extra oxygen and call for more and more fuel to be added to the trim
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Old 03-17-2004, 02:58 PM
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YES IT WILL!!!
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Old 03-17-2004, 03:56 PM
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well that might solve my drop in gas mileage after doing my headers...
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Old 03-17-2004, 04:43 PM
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You will get the same affect with misfires..... also a problem with headers and burned wires. The O2 sensors see the unburned air from the misfiring cylinder, and start adding unneeded fuel to the bank.
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