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Old 12-20-2004, 02:14 PM
Hunterb Hunterb is offline
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Vacuum Port?

Hi everyone,

I have recently purchased a 1990 Prostar 190 with the Ford 351 Indmar engine. It sat for a while which created some issues that I have figured out. It is now up and running well, I think. I like to use a vacuum guage as a diagnostic tool but I can't find anywhere on the intake to plug one into. Does anyone have any advice on where I can connect a guage? I realize I may have to undo a plug of some sort on the manifold and install a fitting and that's not a problem, I'm just wondering where a suitable plug may be located.

Any help will be appreciated. Hope everyone has a great Christmas!!

Bruce
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Old 12-23-2004, 01:51 PM
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No one uses a vacuum guage?
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Old 12-23-2004, 01:58 PM
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I try to stay away from anything call vacuum!
Sorry no help!
Merry Christmas!
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Old 12-23-2004, 02:03 PM
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No clue?
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  #5  
Old 12-23-2004, 02:22 PM
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Congrats on the 190

I cant answer your question either. Keep poking a stick at this thread and I’ll bet you get the info you need.

Sorry

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Last edited by MarkP; 12-23-2004 at 02:44 PM.
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Old 12-23-2004, 02:29 PM
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If it is carburated, then you can run a spliced hose with a brass or high temp plastic barbed connector shaped like a "Y" or "T" from the intake spacer(little plate under the carb with a hose that connects to the valve cover and pcv valve). The spliced hose can now be accessed by a vacuum gauge. I would suggest either splicing the current hose and just cap of the open end when not in use.
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Old 12-23-2004, 02:34 PM
ktn_cmu ktn_cmu is offline
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Martini is correct, there should be a vacuum port below the carb...however, when running a gauge make sure it is the only thing connected to that port, do not run it with the "T" or "Y" connector. Just as airflow, vacuum takes the least restrictive route. If it is connected to a gauge and to the PCV it will suck from the PCV since it is so easy, and you will have less vacuum for the gauge.
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Old 12-23-2004, 02:43 PM
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See Hunter, I knew it!! Got a love this site

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Old 12-23-2004, 02:52 PM
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milkmania milkmania is offline
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but, what is a vacuum gauge gonna tell you?

I mean, you gotta have baseline established first[img]images/smilies/confused.gif[/img]
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  #10  
Old 12-23-2004, 09:59 PM
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Quote:
Originally Posted by milkmania
but, what is a vacuum gauge gonna tell you?
I dont know
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