Quote:
Originally Posted by tw
Don't know how you checked vacuum lines for leakage since that usually requires a vacuum gauge. Some lines can be tested by simple squeezing the line to learn what happens. Then comparing that line to its function defined in the shop manual.
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I saw in some youtube video that you can spray carb cleaner onto the exterior of the vacuum hoses. If there is a leak in the hoses or at the connections, the carb cleaner gets sucked into the vacuum hose and the engine either stalls or revs. This guy also said you can use an unlit propane torch to do the same thing. I was out of cleaner, so I used a propane torch. But it was a little bulky and hard to get into some locations. So I should try it again now that I have a pretty full can of carb cleaner.