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Jun 3, 2002 | 10:04 PM

dan79

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From: Hamburg, NY

ported vacuum

I have a 302 in my 69 F-100. The vacuum advance was hooked up to a constant vacuum. Also there was another line from the manifold hooked up to a valve of some sort on my intake and was hooked up to my advance by a T. The thing is that I think the advance is supposed to go from a ported port and hook right up to the advance. The problem is that the port is not working. There is no vacuum at all at it when there should be vacuum above idle. Does anybody know why this does not work? What is the right way to hook it up? Trying to straighten out the previous owners work. I would appreciate any imput.

Dan 69 F-100 302, C4

Jun 3, 2002 | 10:52 PM

Mil1ion

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ported vacuum

What side ,on the bottom of the carb is it hooked to?
Passenger or Driver side

[font color=red]Dennis

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Jun 4, 2002 | 08:13 AM

jas88

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From: Greater Austin, Texas

ported vacuum

If your truck is running fine on manifold vacuum and not dieseling when you shut it off, then you should just unhook all that other crap and stay with the manifold vacuum. Run as much advance as you can get away with.

Jun 4, 2002 | 09:51 PM

dan79

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From: Hamburg, NY

ported vacuum

The Passenger side. There is not one on the other side. There is a constant vacuum in the back though.

Dan 69 F-100 302, C4

Jun 5, 2002 | 08:35 AM

PetesPonies

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ported vacuum

Jun 5, 2002 | 11:08 AM

Post Fiend

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From: Brea CA

ported vacuum

Dan, it should hook up to the passenger side fitting. As a side note, some ’67 289’s had the dizzy connected directly to manifold vacuum from the factory. This resulted in excess knocking on the #1 main bearing especially if the clearance was on the high side. A service bulletin from Ford came out and rerouted the dizzy vacuum straight to the passenger side of the carb. along with bearings to fix the #1 knock.

Barry

Jun 5, 2002 | 12:04 PM

dan79

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Joined: Mar 2001

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From: Hamburg, NY

ported vacuum

Ok I tried rerouting it to the one on the passenger side like it was on the 302 in my 79. The problem is there is never any vacuum comming out of it. It should have no vacuum at idle and vacuum above idle. I dont know the possibility if this could be clogged or malfunctioning. Thanks for the imput so far.
Dan 69 F-100 302, C4