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#59797 04/29/2006 5:10 AM | Joined: Apr 2005 Posts: 50 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2005 Posts: 50 | The vacuum gauge is a very useful tool. The gauge will give a lot of information about the engine.
The web site you point out gives some good information on reading the gauge. It is best to spend time reading the gauge on a good running truck first, so you know what a good normal condition is at idle, wide open throttle etc. Once you get used to the gauge you can find problems quickly and easily using the chart.
I have a vacuum gauge installed on the dash of my '59 which I look at all the time. You can even improve gas milage if when you drive you try to keep the needle in the 15-20 in.hg. range. Pontiac installed vacuum gauges in some of their cars in the '60s.
The vacuum gauge is installed using a rubber hose that you hook up to a vacuum port on the intake manifold. There is usually a port that will be right in the middle of the intake that will give a good average reading of all cylinders. | | |
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