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Guest Message by DevFuse

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Vacuum Gauge

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9 replies to this topic

#1 Freds404


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Posted 17 August 2011 - 11:54 PM

Thought somebody might find this useful if you are having vacuum issues and want to learn a little more about your engine. You can make one of these with some fuel hose slipped onto an over the counter vacuum gauge, super cheap.

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...my Brat holds steady at 20, I dont know if that is typical or not though for these cars.

Edited by Freds404, 18 August 2011 - 11:56 AM.

#2 mwbean


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Posted 06 December 2011 - 03:06 AM

this one looks my lysle vaccume gage

#3 Loyale 2.7 Turbo

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Posted 05 February 2012 - 12:40 AM

I Like that! ... Where I could buy one?

#4 nipper


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Posted 05 February 2012 - 01:08 AM

It is the least loved yet cheapest and one of the more informative diagbnostic tools there is, long before puter or engine analyzers.

#5 spazomatic


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Posted 06 February 2012 - 09:50 AM

if you have a carb, vacuum gauges are essential for tuning for sure.

#6 lastchance


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Posted 07 November 2013 - 12:25 PM

for fuel injected cars a vacuum gauge like this is still useful, correct? 

#7 nipper


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Posted 07 November 2013 - 09:22 PM

for fuel injected cars a vacuum gauge like this is still useful, correct? 

Yes, since it also diagnoses mechanical stuff, like valves, rings, collapsed clogged exhaust.

#8 Dj7291993


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Posted 11 June 2014 - 08:54 PM

Lol, if you're high altitude, you may need to adjust those reds and greens.  16 inches ain't too bad around here.  I don't think I ever seen one hit 22, outside of snap-closed-throttle.

#9 coxy


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Posted 21 June 2014 - 11:18 PM

Vaacum guages are great tools, Mine however is somewhat exotic it initially saw service in the cockpit of a WW2 P400 Aircobra in the South Pacific brilliant bit of gear for diagnosis work though and even a cheapy is worth the effort they will save you countless hours when diagnosing problems.

#10 Dirk


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Posted 22 August 2014 - 08:17 PM

I have mine permanently under the hood.  The needle is a little shakey when cold but when warmed up it sits solidly on 21" at idle.  I also love my Wideband O2 sensor.


Both these tools are excellent for tuning and diagnosis.Attached File  20140823_130833.jpg   77.78K   6 downloadsAttached File  20140823_130848.jpg   95.41K   5 downloadsAttached File  20140823_131053.jpg   62.03K   7 downloads

Edited by Dirk, 22 August 2014 - 08:19 PM.

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