Vacuum elbow thingie

[peter213]

Does anyone know if, what the photo shows, is a common occurrence with a '74 T2 1800?
I put-putted into my carport in the evening. Everything as it should be.
Next morning the car would hardly run.
After a week of increasing frustration, I found this after a camera hunt.
It's rather important because that same night my security camera's IR was turned off somehow and I have a neighbour with a Narcissistic personality disorder.
Thanks in advance.

[Marc]

Those elbows often fail like this. Back in the day we always kept a drawer full of them handy at the shop...they were a readily-available in-stock item at the local dealer, I suppose they're a bit harder to come by nowadays.
Don't recall the P/N anymore but according to Bus Boys it's 021 129 637C or F (IIRC the RH one had an extra small nipple but you can plug that to use it on the left):
http://www.bus-boys.com/carb1.html

[peter213]

Thanks for that.
The thing is, I hooked it back up and everything went back to normal (i.e. fumes, noise and happy dak-dakking).
So there's nothing wrong with the elbow thingie.
I'm just wondering how it could become disconnected, as it did.
The pic shows how I found it and is also the reason why I found if. (Eyes not so good at 60)
Is there any event which could cause this?

[Marc]

Sorry, in the pic it looked to me as though it had started to split ...guess I was just seeing the mold lines. If it fits snugly, you're done. If it's a little loose, put a Ty-rap (or a small hoseclamp) on it, just tight enough to snug up the fit until you can get a new one.
They can pop off when the engine "sneezes" back through the intake - the cause of that is usually an overly-lean mixture (often due to worn throttle bodies on the carbs).

[peter213]

Thanks again.
Learn something every day.
I wish I'd seen that before I started replacing everything.

[Jim Ed]

you might be able to get a replacement here:
http://www.thesamba.com/vw/

[Jim Ed]

Sorry, in the pic it looked to me as though it had started to split ...guess I was just seeing the mold lines. If it fits snugly, you're done. If it's a little loose, put a Ty-rap (or a small hoseclamp) on it, just tight enough to snug up the fit until you can get a new one.
They can pop off when the engine "sneezes" back through the intake - the cause of that is usually an overly-lean mixture (often due to worn throttle bodies on the carbs).

use a Fuel Injection hose clamp. they won't cut into it.