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JackF

Vacuum gauge for tuning

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Got thinking of this post of last week and I don't get it.

"WOW !!! I AM IMPRESSED with you using a vacuum gauge,

and 20 is a good reading - and if you adjust to the highest vacuum

reading at 800 rpm - you'll be spot on with air/fuel mixture without

having a probe/exhaust tester in the tail pipe.

Vacuum gauge is the poor man's exhaust gas tester

and your valve adjustments are set to what ?

new plugs ?

got points ? dwell is very important ."

How does one connect and manage to do this? Color me clueless...but willing to learn.

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The motor is a big air pump, in and out. The better the car is tuned, the more air it pumps the more vacuum it creates.

I believe you can connect to any vacuum bung. A few guys choose a vacuum gauge as one to be in the cockpit.

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Guest Anonymous
How does one connect and manage to do this? Color me clueless...but willing to learn.

You might do well to find and read the instructions that invariably come with each vacuum gauge. I Most auto repair manuals also contain detailed instructions. am confident these instructions are available on the net too.

As a hint, vacuum drawn from above the throttle plates and there is manifold vacuum. Manifold vacuum is measuring from some available port on . . . the manifold.

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