Can anyone give me a reference point as to how much intake vacuum a 117.985 should produce at idle? Im trying to diagnose a vacuum related problem and I am only reading 15.5 inHG (or -52 KPA), I feel this is low as the levels I am used to in other vehicles are more around 20 inHG (-66 to -68 KPA). The FSM isnt being all that helpful in this regard.

Thanks fellas. . .

__________________
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-Current Stable-
'78 MB 450SL-C 107.024.12.020783 #3840 <Kayleen>
'85 FORD F250 6.9L Diesel <Allison>
'98 Lexus ES300 <Rachel>
Long Gone...
'74 Chevy G10...........................'99 GMC Yukon 4X4
'83 Chevy Suburban 6.2 diesel .....'99 SAAB 9-5
'90 Mitsubishi Eclipse GS............. '01 Chevy Tahoe
'98 Nissan Altima .......................'02 MB ML320
'88 Chevy Suburban V2500 4X4 6.2 diesel