Vacuum Advance connection questions

[ncpi]

I have a distributor with 2 vacuum ports and a EMPI 34-P-3 carb

Only one of the vacuum advance lines is connected. Where are the 2 distributor vacuum lines supposed to connect?

Thanks,
Bill

[kenj06]

Hi Bill,
The vacuum port on the left side of the carb is connected to the wrong port on the distributor and you need a shepherds hook to prevent fuel from running into the distributor and ruining the diaphragm. This controls the timing advance
Something like this https://www.thesamba.com/vw/classifieds/detail.php?id=2327965 for the shepherds hook.
The second port on the back of the carb that appears to have a tube jammed in it goes to the port on the distributor towards the front of the car where the black hose is currently connected. This controls the timing retard.
Picture taken from the gallery

Hope that helps.
Ken

[ncpi]

Thanks Ken! Just what I needed.

I think I can make a shepherds hook / loop with a long enough piece of vacuum hose.

[heimlich]

Part number for the hook is 211 129 493

You can find them in the classifieds.

https://www.thesamba.com/vw/classifieds/search.php...ton=Search
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[ncpi]

[heimlich]

[Wildthings]

You don't want to hook up the retard can unless it holds vacuum when you suck on it. If the can leaks it is nothing more than another vacuum leak that will give problems at idle and off idle. Note that most retard cans are bad at this point.

[ncpi]

[Texn1995]

So if it runs fine except when I’m slowing down and on the brakes? It dies when I’m on the brakes and coming to a stop. 😞

[Wildthings]

If you have a working retard can on the distributor you need a carb which is designed to work with it. They will typically have a smallish hole drilled in the throttle plate to give more air at idle.