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Spray soapy water on all small black rubber hoses on engine when running. If any place along any hose causes soapy water to "blow bubbles" the leak will be there. Old trick that may or may not work.
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∙ 13y agoThis answer is:
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Earn +20 ptsQ: How do you diagnose a vacuum leak on a 1992 Mazda Protege?
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