Yes you should be able to find a suitable vacuum gauge at any tool house or
automotive parts store.Invaluable tool. You will find some of the older auto
repair books(from the 50's and 60's )have sections on how to use a vacuum
gauge for troubleshooting. Something the newer ones tend to ignore. You can
often find these books at the library. That rubber fitting in the brake
booster is able to turn but not too easily. If you try to remove it be
prepared to replace it as it will probably crack or break apart when you try
and pry it out due to age. They are cheap and easy to replace. These are
usually sold at auto parts stores in several sizes from what I have seen and
are usually not special.
>From: Bruce Stubblefield <audiblefeast@xxxxxxxxx>
>Reply-To: mailing-list@xxxxxxxxxxxxxxxx
>To: mailing-list@xxxxxxxxxxxxxxxx
>Subject: IML: VACUUM GUAGE(TOO DUMB TO PUT A SUBJECT LINE)
>Date: Wed, 10 Dec 2003 08:49:13 -0800 (PST)
>
>SORRY, REPOST, NO SUBJECT LINE LAST TIME. MEA CULPA
>Hello List!
> In my quest to find and eliminate possible vacuum
>leaks in the mighty '78 NYB, I have found one at the
>parking brake vacuum release canister. Fixed that.
>Plugged the hose up for now, actually. The carb is a
>rats nest of vacuum ports going who knows where. Is
>there a vacuum guage-type tool that I could use to
>look for leaks?
> Also, a large vacuum hose goes directly from the
>intake manifold to the power brake booster. The
>fiitting at the brake booster(where another vacuum
>line exits and continues on) is a small cylinder
>sticking out of the front end of the booster with two
>vacuum line port/fittings.
>This fitting doesn't jiggle like it's loose, but it
>does TURN. Does anyone know if this is right, or
>should I suspect a vacuum leak at the brake booster?
>Do I need to remove the vacuum hoses at this fitting
>to see how MUCH it turns?
> BTW, the symptom I'm seeing is a "backfire" out of
>the top of the carb when I punch the gas if the car is
>coasting(engine under no load). If I punch it hard
>enough and I'm going slow enough, the engine just
>dies.
>
>Thanks everyone
>Bruce S
>69 coupe
>78 NYB
>
>
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