Posted September 20, 201212 yr comment_402141 Here's a great tutorial; take you 2 minutes or less to view the whole thing. http://www.secondchancegarage.com/public/186.cfmVaccum readings will give you a very good indication of the mechanical condition of an engine, the rings, valves, etc. You can attach a vacuum gauge and have a reading in 30 seconds or less. These days reading a vacuum gauge has become a lost art, which is a shame, because doing it FIRST can save you a lot of time chasing in the wrong direction. It's fast, and easy, and with tutorials like this you no longer even have to memorize all the different possible reading scenarios. Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/ Share on other sites More sharing options...
September 20, 201212 yr comment_402146 Like it. Thanks for sharing! Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402146 Share on other sites More sharing options...
September 20, 201212 yr comment_402148 My 1962 Olds Starfire had a vacuum gauge mounted from the factory, on the center console. Owner's manual included instructions for readings. All the mechanics in the garages used vacuum gauges in the 50's - it was one of the first things they reached for when they had engine problems. I don't see them used so much anymore..FWIW,Carl B. Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402148 Share on other sites More sharing options...
September 20, 201212 yr comment_402149 My 1962 Olds Starfire had a vacuum gauge mounted from the factory, on the center console. Owner's manual included instructions for readings. All the mechanics in the garages used vacuum gauges in the 50's - it was one of the first things they reached for when they had engine problems. I don't see them used so much anymore..FWIW,Carl B. Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402149 Share on other sites More sharing options...
September 20, 201212 yr comment_402152 I like that write up, pretty good stuff there.I see alot of info about using with carburetors, does this work with fuel injection also? Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402152 Share on other sites More sharing options...
September 20, 201212 yr comment_402164 Nice stuff Wade! Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402164 Share on other sites More sharing options...
September 20, 201212 yr Author comment_402173 280~Master said: I like that write up, pretty good stuff there.I see alot of info about using with carburetors, does this work with fuel injection also?Yes. Vacuum is vacuum. How the car fuels itself doesn't affect MANIFOLD vacuum, only the pumping action (or inaction) of the motor. And, as another thread points out so clearly, if you live at 9000', you're going to show a lot less vacuum than the guys @ sea level. 1" per thousand feet, appx. Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402173 Share on other sites More sharing options...
September 20, 201212 yr comment_402177 ........but you can't use it with side draft Webers or Mikunis.....right? They don't have a balance tube. Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402177 Share on other sites More sharing options...
September 21, 201212 yr Author comment_402203 Diseazd said: ........but you can't use it with side draft Webers or Mikunis.....right? They don't have a balance tube.*Facepalm* Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402203 Share on other sites More sharing options...
September 21, 201212 yr comment_402229 I actually have a VAC gauge on my car and know how to read it, along with mechanical fule pressure, temp, and oil pressure gauges. I put a pressure switch on the oil pressure gauge line to the lights on the gauges, if they go out it means there is an oiling problem. Must watch the 40 year old mill closely to prevent problems. Link to comment https://www.classiczcars.com/forums/topic/44454-how-to-read-a-vacuum-gauge-in-30-secs-or-less/#findComment-402229 Share on other sites More sharing options...
Create an account or sign in to comment