vacuum pressure

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11-29-03, 04:43 PM

exodus82

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vacuum pressure

what pressure should the vacuum lines be at idle????

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11-29-03, 08:43 PM

Rx7carl

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Manifold vacuum? Depends on idle speed and health of the engine. My racecar with 150psi compression and idles at 700- 18-20"hg.

My streetcar with 90 psi compression, idles at 800- 12"hg.

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11-29-03, 09:27 PM

matthewpims

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my 84 se with 200+k miles has 16 inlbs of vacuum at idle (roughly around 900 rpm)

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11-30-03, 05:17 PM

exodus82

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does your vacuum pressure hold steady at 16 inlbs at idle???

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11-30-03, 05:39 PM

Rx7carl

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My racecar is rock steady, cant say the same for the streetcar, the needle is a blur LOL.

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