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| Air cleaner vacuum port ? https://www.slantsix.org/forum/viewtopic.php?t=37797 |
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| Author: | 00spy [ Wed Nov 04, 2009 3:27 pm ] |
| Post subject: | Air cleaner vacuum port ? |
I finally got my slant put back together after cleaning up the valves ,and replacing the seals. It seems to be getting 18hg . I think my cruise control has a small leak in it , because the vacuum stopped bouncing a little ,when I capped off the cruise. On to the question,does the air cleaner vacuum port on the carb have constant vacuum? I pulled the hose off of it and had no vacuum coming from it. Thanks for any replies Dave |
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| Author: | Reed [ Wed Nov 04, 2009 3:43 pm ] |
| Post subject: | |
What carb and what port? Ports on the carb can have all vacuum all the time or all vacuum some of the time, depending on their intended function. |
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| Author: | 00spy [ Wed Nov 04, 2009 3:56 pm ] |
| Post subject: | |
Holley 1920,the port that goes to the aircleaner temp sensor. It is the port on the passanger side up front of the carb. Dave[/url] |
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| Author: | Reed [ Wed Nov 04, 2009 4:22 pm ] |
| Post subject: | |
Yes. That should be a constant vacuum port. |
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| Author: | 00spy [ Wed Nov 04, 2009 4:32 pm ] |
| Post subject: | |
I will check again tommorrow, but I am pretty sure it did not have any .( hopefully I am wrong ).What could be the cause of not haveing any? The gasket is on correct , the hole that is on the gasket is on the passenger side and to the front of the intake manifold. The carb is new (from Dan) . Dave |
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| Author: | Reed [ Wed Nov 04, 2009 4:43 pm ] |
| Post subject: | |
:shrug: If the gasket is installed correctly over the hole in the intake, then you are either on the wrong nipple on the carb or there is a blockage somewhere. |
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| Author: | 00spy [ Wed Nov 04, 2009 4:47 pm ] |
| Post subject: | |
Yeah , I guess I will take the carb off ,and check everything out. Thanks for the help,I don't have much time to work on it , and I am glad I was able to get every back on it before it got too cold. Dave |
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| Author: | SlantSixDan [ Wed Nov 04, 2009 9:01 pm ] |
| Post subject: | |
The air cleaner vacuum port on the 1920 is on the driver's side near the bottom, not on the passenger side. Don't know what port you're looking at; refer to Figure 1 in the 1920 manual you linked. |
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| Author: | 00spy [ Thu Nov 05, 2009 2:15 pm ] |
| Post subject: | |
Dan , you are right , and I am a moron for putting down passenger side  . I took the carb off and looked at it ,and found out the reason it did not have any vacuum ,was that it wasn't getting any.I cut a slit out of the hole( with a razor blade) in the gasket, to open it up to get vacuum , and now it operates the air cleaner flapper as soon as it is cranked up. Thanks for the help Dave |
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| Author: | 00spy [ Fri Nov 06, 2009 2:31 pm ] |
| Post subject: | |
I take it that the older intake manifolds have a hole for that ports vacuum, but since mine is newer and had a different carb on it ,that is why it wasn't getting vacuum ,until I cut the slit going to the hole to get vacuum to that port. Is that right? Dave |
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| Author: | SlantSixDan [ Fri Nov 06, 2009 3:00 pm ] |
| Post subject: | |
Yup, that's correct. |
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