Question about Jeep Cherokee
Though it will make you look silly, The best way I have found to check for vacuum leaks is to take a short length of garden or heater hose 2-3', put one end to your ear and use the other end as a directional microphone. You will be able to "zero in" on any leak very quickly and is accurate within an inch or so. When you find a suspected leak, use a spray bottle with water in it and spray suspected leak. the engine will stumble or momentarily miss if there is a leak. Water in that small amount will not harm the engine (they actually make water injection units to kill detonation). You can "gauge" how water affects the engine by first creating your own "test leak" and spraying it. Also...do not entirely trust any diagnosis offered by peppy boys...techs there are generally "beginners" some of which may later in life become decent techs, others may become stock boys... Do your own testing with a decent volt/ohmeter and a basic manual like chiltons or haynes to guide you. Questions along the way, I or most others here can help you with.
Good luck, hope it's something simple!
Posted on Jul 27, 2009
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Posted on Jan 02, 2017
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