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Author
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Topic: Vacuum Gauge
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aGreenAgent
Journeyman Posts: 71
From: Orange County, CA
Registered: Oct 2002
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posted 01-02-2003 01:45 AM
  
I bought a vacuum gauge to test if my valve guides are bad (I was told they are) but I can't find where to put it. I have a 66' 200CID, and niether the instruction manual for it nor my chiltons book has the location to hook it up on the I-6. Does anybody have a diagram they know of online or can someone describe where to hook it up?
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SteveLaRiviere
Administrator Posts: 30261
From: Saco, Maine
Registered: May 99
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posted 01-02-2003 08:04 AM
Look for a vaccum nipple at the base of your carb.------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Remember our sponsors, Mustangs Plus, NPD, Osborn Reproductions, and MyFordPerformance.com.
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cobravenom71
Gearhead Posts: 492
From: KIssimee, Fl USA
Registered: Aug 2002
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posted 01-02-2003 08:21 AM
Make sure that the vacuum fitting that you use on your carb is the 'manifold vacuum' source, and not the 'timed' or 'ported vacuum' source.
Manifold vacuum is strongest at idle, and that is the one you will want to use for this test. Ported vacuum builds as the engines RPM's increase and is usually used for vacuum advance diaphragms on distributors.
The manifold vacuum port is usually much bigger in diameter than the ported vacuum fitting.
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aGreenAgent
Journeyman Posts: 71
From: Orange County, CA
Registered: Oct 2002
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posted 01-02-2003 04:17 PM
I can't find it anywhere. The carb is a remanufactured holley, it says 2910 but I don't see any listing of that on their website.
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69 Sportsroof
Gearhead Posts: 911
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 01-02-2003 06:03 PM
You can use the PCV port on your carb or intake and you can use the port your auto trans vacuum line connects to. Just make sure you re-attach them 
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aGreenAgent
Journeyman Posts: 71
From: Orange County, CA
Registered: Oct 2002
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posted 01-03-2003 02:58 AM
is that port on my carb that one with the thin metal tube going to my intake?
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