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40cpe · 01-23-2020, 10:20 PM

If you spray over a vacuum leak you are adding fuel to a lean mixture caused by the leak. If you spray fuel into a mixture that isn't leaned out by a leak, you make the mixture over rich.

01-23-2020, 10:20 PM	#4
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,024	Re: Vacuum leak If you spray over a vacuum leak you are adding fuel to a lean mixture caused by the leak. If you spray fuel into a mixture that isn't leaned out by a leak, you make the mixture over rich.