Hi Craig, I'm somwhat familiar with vacuum diagnosis. AT idle, 850 rpm, and a warm, ie no cold enrichment , my van sit about 13-14 inches. The operation or movement of the vacuum gauge is the meat. A vibration movement, worn guide, 2 points of movement slow, worn plugs, occasion drop, valve /intake leak, constant low, vacuum leak/ timing issue. That the sketch. If you'd like to gather more information on general setting and tuning of the fuel injection, look under my last name in the archives say 98-3003. Mark Keller 91 Carat |
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