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Old 10-13-2000, 07:23 PM
mercy59
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I have a '85 190e 2.3. How do I go about finding a vacuum leak? When the car is idleing in park, the economy gauge shows a leak (about 1/8 of the guage). When I put the car in rev. drive or anything else, the leak gets worse (up to half guage then back don to 1/4). Also when I put the car in drive the engine looses a lot of idle speed. The car will also shudded, like it is missing up until about 1100 RPM's, then it runs smooth. Has no power until it gets over that 1100 rpm. Is this a vacuum leak, or should I sell it quick?!?!?
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Old 10-13-2000, 08:55 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
There are a couple of ways. The easiest is to remove the air filter housing and look. Use your hands to move and shake all of the rubber connections. IF one falls off or has a hole in it, you have found the problem.

There is a machine that costs $900 that will put smoke in the engine. IF you see smoke coming from under the intake or from a conneciton, you have found the leak.

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