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Vacuum at idle

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Old 01-20-2002, 03:14 PM
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Tom M'Guinn

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Post Vacuum at idle
For those of you who have checked, how much vacuum do you have at idle on your 951?
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Old 01-21-2002, 12:02 AM
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David Salama
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I'll have to check again next time I get in my car, but I believe it is -18psi.
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Old 01-21-2002, 07:04 PM
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marksportcts
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Do you mean 18-in-Hg vacuum
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Old 01-21-2002, 10:22 PM
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15 TO 16 while cold
21 after warm up at about 975 RPM
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Old 01-22-2002, 08:28 PM
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David Salama
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Yes, you are correct. 18 in Hg per my VDO boost guage at idle at 1200 RPM.
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