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04-02-2005, 06:49 PM
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Best way to find vacuum leaks? argon? oxygen? propane? ether?
Updated:Full write-up on DIY: http://www.peachparts.com/Wikka/M103VacuumLeak
Original posting I'm trying to survey the various ways to find vacuum leaks in the intake. I've heard of everything from brake cleaner (interrupts combustion and causes idle speed to go down) to ether (increases combustion and should cause idle to go up). The problem with these approaches is that most of our cars have a computer to keep the idle at a set range. So adding something to speed up the idle would be countered by the computer via the idle air valve. What about argon? For those not familiar with argon, it is used in welding and other processes because it is totally inert and should theoretically interrupt combustion. And while we're on the subject of finding vacuum leaks, what should we do to the engine to make it easier to identify? I could imagine disabling the computer by removing the OVP so it doesn't try to adjust the idle speed. Thanks, Robert
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89 300te 222,222 92 300e 190,000 Last edited by r_p_ryan; 04-18-2005 at 12:32 PM. Reason: Updated 
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