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02-09-2011, 06:28 AM
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#1 |
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Words under my name
 
Join Date: Nov 2010
Location: Lakewood, Washington
Posts: 181
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vacuum test issues
I purchased a Vacuum test (first picture) and I hooked to the carb at the tube sticking from the carb with the screw in it (second picture), at idle it registered nothing, at aprox. 2k rpms it registered around 17-18. I am not confident that this is a good place to test vacuum. If this is fine then cool, if not where should I plug in? any advise would be great.
Thanks in advance 
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69 Chevy CST/10 "Project: Bloody Knuckles" my slow going project.2010 VW Golf, daily driver Wrench Rookie |
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02-09-2011, 06:36 AM
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#2 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: vacuum test issues
The location that you hooked your gauge to is "ported" vacuum and it will be more helpful to check manifold vacuum. (Ported vacuum is above the throttle plates and manifold vacuum is below the throttle plates).
If you have a vacuum line from the transmission you can hook up to the location and get manifold vacuum. Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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02-09-2011, 08:28 AM
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#3 |
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Words under my name
Join Date: Nov 2010
Location: Lakewood, Washington
Posts: 181
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Re: vacuum test issues
Thank you Jim
Posted via Mobile Device
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69 Chevy CST/10 "Project: Bloody Knuckles" my slow going project.2010 VW Golf, daily driver Wrench Rookie Last edited by steelscout; 02-09-2011 at 08:32 AM. |
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