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| Vacuum line location https://slantsix.org/forum/viewtopic.php?t=41853 |
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| Author: | Herr Otto [ Sat Sep 11, 2010 3:08 am ] |
| Post subject: | Vacuum line location |
On the top rear of my 1965's Slant six valve cover there is a what appears to be a breather/vacuum line port. Does this get a vacuum line, and if so does it come from the vacuum port underneath the carb? Thank you |
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| Author: | Herr Otto [ Sun Sep 12, 2010 10:58 am ] |
| Post subject: | |
I connected a piece of vacuum line from the bottom of the carb to the vacuum port at top/rear of the valve cover. The engine does not want to idle very good with this connection. Any suggestions? Thank you, Herr Otto |
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| Author: | ceej [ Sun Sep 12, 2010 2:27 pm ] |
| Post subject: | |
The one with the PCV valve goes to the base of the carburetor, the "Breather" hose goes to the cover tin on the air cleaner. This allows it to pull clean air though the engine. Since there is no restriction in the breather, you would introduce a large vacuum leak by plugging this into manfold vacuum. CJ |
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| Author: | Herr Otto [ Sun Sep 12, 2010 5:02 pm ] |
| Post subject: | |
Thanks for the reply. This is a 65 slantsix and as far as I can tell there is no PCV valve and there also is no small port on the aircleaner for a line. |
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| Author: | Herr Otto [ Sun Sep 12, 2010 5:39 pm ] |
| Post subject: | |
After some further reading I may be mistaken and I do have a PCV valve. It is just not what I am use to seeing as a PCV valve. I will do some further investigating and see if this is in fact a PCV valve and if I can remove it. |
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| Author: | ceej [ Sun Sep 12, 2010 5:56 pm ] |
| Post subject: | |
According to my '65 FSM, you should have a pcv valve. The size of the breather hose should be ~5/8" It goes to the side of the air cleaner. CJ |
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| Author: | Herr Otto [ Mon Sep 13, 2010 6:37 am ] |
| Post subject: | |
I removed the valve cover and sprayed carb cleaner through this port. The carb cleaner goes right through, I also shot air through it with no restriction. That is why I am thinking this is not a PCV valve as their should be restriction. This port just appears to be a breather that may have just hooked to an air cleaner but never had a vacuum line going to it like a PCV valve would have. I am not the person who put this engine in this truck and I am not positive this air cleaner went with this engine. |
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