Vaccum Gauge
 

I've got some time on hand -- vacuum gauge, is it worth/beneficial installing one?
Thanks

Re: Vaccum Gauge
 

I'd be interested in hearing from folks what monitoring vacuum while driving tells the driver.

Re: Vaccum Gauge
 

Higher the vacuum the better the gas mileage. Work the pedal.

Re: Vaccum Gauge
 

I had a 1979 Cadillac Seville, that had "fuel economy" lights in the instrument panel. Two little lights, orange and green. They were simply wired to a vacuum switch. High vacuum > green light. Low vacuum > orange light. For a driver that has a heavy foot, they were helpful.

Joe B

Re: Vaccum Gauge
 

I have a vacuum gauge built into my tune up station. I hooked it up the car and had trouble reading it and I had a chart to compare it to. But, what I did find out is that the engine is relatively healthy and a solid performer. Nothing to out of the ordinary.

Mike

Re: Vaccum Gauge
 

I have a Stewart Warner Motor Minder, dial is color coded and pretty self explanatory as long as the needle is steady. If the needle is not steady a vacuum gauge can show many other issues.

https://live.staticflickr.com/4805/4...7c6ff024_z.jpg

https://live.staticflickr.com/65535/...c616430a_z.jpg

Re: Vaccum Gauge
 

Is it worth installing one ? No, JMHO.

But, if it is something you want to do, then why not.

Re: Vaccum Gauge
 

Re: Vaccum Gauge
 

Like he said, I've got some time on hand. Do it, gives you something to do.:)

Re: Vaccum Gauge
 

I run one in my hot rod A and despite the naysayers, I find it a great tuning tool.

Re: Vaccum Gauge
 

Probably not. I had a NOS SW Motor Minder and an empty hole. Cost, not much.

I don't see how installing a vacuum gauge can create a problem. Your other questions aren't worth my time answering again.

I totally agree, altho that is not the main reason I installed my Motor Minder. But I can monitor and to a certain extent, optimize how my engine is running while driving

Re: Vaccum Gauge
 

Re: Vaccum Gauge
 

that chart is the best ive found across the web. holds true for any engine any year (altho im not sure what a super modern car with variable valve timing and all sorts of fun trickery would show)

print it off on a full sheet of paper and keep it in your toolbox!

Re: Vaccum Gauge
 

For in shop testing it can be a good tool if, used with the chart. On the road the vacuum gauge won’t show much. You need to pay attention to the gauge to get good information Kind of tough to do while driving.

Re: Vaccum Gauge
 

A vacuum gauge can be a good diagnostic tool. But it really really hard to watch if its attached to the dash panel when trying to adjust the carburetor.

Re: Vaccum Gauge
 

I'm done...

Re: Vaccum Gauge
 

I'm planning to install a vacuum gauge once I get the car sorted. I think a vacuum gauge is one of those diagnostic tools that you learn to read over time, based on your specific knowledge of your car and what readings you get under different conditions.

It's also true that we have limited space for gauges, both on the console and in your field of view, so you should think about whether it's more important to have this than, say, a temp gauge, a tach, oil pressure, etc.

Re: Vaccum Gauge
 

I added a Hastings gauge to the dash just because it was too cool a piece to not display, and does work althoughfaded, fit perfectly below the clock that only works some of the time.

Re: Vaccum Gauge
 

Gee, I hurt someones feelings. Someone I wasn't even responding to.



And I thought post #7 explained my thoughts. Its your car, we still live in a semi-free country, so you can do whatever you want.

Re: Vaccum Gauge
 

Soon what is the normal vacuum reading for a healthy, stock Model A engine, 16,18,20Hg?