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09-27-2002, 06:28 AM
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#2 |
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Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
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First, create a vacuum leak at idle, and see what happens. Unplug a hose from your vacuum tree on the firewall, and pay attention to the idle. If it goes up considerably, you don't have a vacuum leak. If the idle barely changes, or actually drops, you have a vacuum leak.
To find it, first, try listening. Vacuum leaks can often be heard. Second, get a lantern size propane tank with a torch tip on it. At idle, turn the propane valve on medium-high, but don't ignite it. Aim the torch tip towards all tyhe spots you suspect there might be a vacuum leak, and listen for the idle to increase. If it does, the vacuum leak is in the area you were pointing the propane torch tip when the idle went up. Take care, ~Chris
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