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PCV...how much vacuum?

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Old 03-08-2004, 02:55 PM
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Car: 89 firebird
Engine: LO3 TBI 305
Transmission: 700R4 auto
PCV...how much vacuum?
Just curious, how much vacuum should the PCV be pulling? When I check it by hand the valve will attach itself to my finger or hand. Pulls pretty hard. Is this too much?
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Old 03-08-2004, 04:42 PM
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Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
NO
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Old 03-10-2004, 12:00 AM
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Car: 1991 S10 pickup 2700lbs
Engine: 4.3L Z TBI
Transmission: 700R4
Axle/Gears: 3.08 7.625"
no, it is great, means healthy engine good shape pistons rings cylinders and valvetrain, do not worry, but if you are worried then connect a vacuum guage tool to intake or base of carb and see that its inbetween 18 and 22
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Old 03-10-2004, 02:31 AM
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just to clarify, it should be 18-22 at idle.
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