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#1 |
Senior Member
Join Date: May 2018
Location: Coral Springs, Florida
Posts: 559
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I've got some time on hand -- vacuum gauge, is it worth/beneficial installing one?
Thanks |
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#2 |
Senior Member
Join Date: Aug 2020
Location: Sagle, Idaho
Posts: 361
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I'd be interested in hearing from folks what monitoring vacuum while driving tells the driver.
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#3 |
Senior Member
Join Date: Feb 2015
Location: Georgetown, TX
Posts: 535
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Higher the vacuum the better the gas mileage. Work the pedal.
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#4 |
Senior Member
Join Date: Nov 2018
Location: Farmington MI
Posts: 288
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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 |
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#5 |
Senior Member
Join Date: May 2010
Location: Lynden, Wa
Posts: 3,566
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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
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1930 TownSedan (Briggs) 1957 Country Sedan |
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#6 |
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Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,927
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#7 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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Is it worth installing one ? No, JMHO.
But, if it is something you want to do, then why not. |
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#8 |
Senior Member
Join Date: Sep 2019
Location: Fort Gratiot, Michigan
Posts: 2,296
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I look at it as creating tomorrow’s problem. Why do you want it or better still why do you think you need it?
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#9 |
Senior Member
Join Date: Apr 2021
Location: St. Augustine, Fl.
Posts: 438
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Like he said, I've got some time on hand. Do it, gives you something to do.
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IN GOD WE TRUST - SEMPER FIDELIS John ![]() |
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#10 |
Senior Member
Join Date: May 2010
Location: Durango CO
Posts: 1,314
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I run one in my hot rod A and despite the naysayers, I find it a great tuning tool.
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No restorable Model A's were harmed in the building of this truck! |
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#11 | |
Senior Member
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,927
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Probably not. I had a NOS SW Motor Minder and an empty hole. Cost, not much.
Quote:
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 Last edited by Y-Blockhead; 08-27-2021 at 09:56 AM. |
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#12 | |
Senior Member
Join Date: Sep 2019
Location: Fort Gratiot, Michigan
Posts: 2,296
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#13 | |
Senior Member
Join Date: May 2010
Location: Central, IL
Posts: 3,968
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print it off on a full sheet of paper and keep it in your toolbox!
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1929 Model AA - Need long splash aprons! |
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#14 |
Senior Member
Join Date: May 2010
Location: Stuart Florida
Posts: 152
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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.
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#15 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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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.
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#16 |
Senior Member
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,927
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I'm done...
Last edited by Y-Blockhead; 08-27-2021 at 07:46 PM. |
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#17 |
Senior Member
Join Date: Apr 2018
Location: Mebane NC
Posts: 2,409
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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. |
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#18 |
Senior Member
Join Date: Mar 2018
Location: Florida panhandle
Posts: 202
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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.
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#19 |
Senior Member
Join Date: May 2010
Location: Largo Florida
Posts: 7,225
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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. Last edited by Patrick L.; 08-28-2021 at 05:38 AM. |
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#20 |
Senior Member
Join Date: Jun 2019
Location: long beach ca
Posts: 174
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Soon what is the normal vacuum reading for a healthy, stock Model A engine, 16,18,20Hg?
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