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Old 08-04-2000, 10:46 PM
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Join Date: May 2000
Posts: 376
Iam still trying to make my 16V idle. Where would I look for a vacuum leak big enough to prevent it from idling? Checked most of the fittings I can see with propane and carb cleaner. No luck? Checked most of items in the CIS section of the CD with no faults except the throttle valve swith that I should recheck, Any ideas or experiences. Thanks.
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Old 08-04-2000, 10:49 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Turn off the engine and reach under the intake between the distributor and the power steering pump. There is a hose for the idle system that will blow off of the can't see it, but if it's blown off, you will feel it.

Donnie Drummonds
1991 GMC Syclone
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Old 08-05-2000, 01:30 PM
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Join Date: May 2000
Posts: 376
Benzmac, Are you talking about the hose that comes from the auxilary air regulator? I checked it and its o.k. Still no idle.
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Old 08-05-2000, 03:30 PM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Just in case your interested, the modern technique for locating vacuum leaks is the use of a "smoke machine".

This device applies 1psi of a very dense smoke into the chamber to be tested. It quickly indentifies the leak. I have even heard of people using it to find door lock vacuum leaks and evaporative systems leaks (common fuel smells).

Steve Brotherton
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician
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