Vacuum Leak
Vacuum Leak My car has been acting really weird past few months. I have posted before and not had very much luck, so if anyone can help me with finding where the vacuum lines run so I can check to see if I have a leak. Moisture seems to be the cause, it does it when its dry but much more worse when its wet out.
Get a propane torch. DO NOT LIGHT IT. With your vehicle running, put it in certain areas that you might suspect the leak. When You find the spot, your car should surge alittle and idle better. What the propane is doing: it is a heavy gas. When put near a vacuum leak, the heavier gas is much harder to suck throught the leak and kind-of plugs it. This is a trick I picked up from my Mechanic. ( I was studying to be a mechanic in high-school and I was basically his apprentice for about a year. He has roughly 40 years experience and these are the kind of tricks you can learn form these old timers.)
