LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Can someone identify this vaccum line?

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Old 02-04-2006, 06:55 PM
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Can someone identify this vaccum line?

There's two vaccum nipples on the passenger side of the intake. I think the upper nipple is for the vaccum line that comes out the wiring harness. But the lower nipple, where does it connect to? I'm thinking it connects to a little solenoid looking thing near the EGR vavle. It is on a bracket adjacent to where the fuel lines intersect the fuel rail. I see a nipple on that "thing" and I figure a vaccum line runs between the lower intake nipple and that one.

I took the intake off to reseal it and this vaccum line is just... gone. And my memory isn't serving me correctly. Can somebody verify this?
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Old 02-04-2006, 07:14 PM
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Re: Can someone identify this vaccum line?

The lower nipple is the connection for the vacuum line for the fuel pressure regulator , and likewise the "thing" you're referring to is the fuel pressure regulator itself. You're correct in that this lower intake nipple does connect to that device.
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Old 02-04-2006, 10:01 PM
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Re: Can someone identify this vaccum line?

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