12mm vacuum hose

gmurtic · 15 November 2013, 17:35

It will
The engine will draw fresh air directly into intake manifold and make the engine work bad or most likely not be able to run.

sb001 · 15 November 2013, 19:26

Not the hose coming off the intake manifold over to the control valve; the one going from the vacuum tank under the fender to the control valve. It would still affect it?
My car has no problem running right now even with this tear, except for a bit of a cold startup issue where it idles low and "chugs" until fully warmed up-- this is the main reason I was asking. But after warmed up it runs fine.

68autobug · 17 November 2013, 22:27

Hi
Naturally it will affect Your car. All the vacuum hoses need to be leak free for the system to work. I would think that You probably have no vacuum left in the vacuum tank, and that You are using the vacuum coming direct from the inlet manifold.. You need to replace ALL the vacuum hoses otherwise You cannot adjust or fix anything else when problems arise.
The cotton covered hose hides cracks and its live span is over. You can replace the hose with an identical hose made by Belmetrix in the USA or from a Mercedes Benz dealership.. or a good quality transmission hose
like "gates" brand.. I have been using a USA truck air hose called POWAFLEX 12.7mm multi=purpose... also another one called TOTALFLEX MULTI non conductive 12mm 1/2" 1200psi BP made in USA. I bought both these from truck parts shops.. they are a redish orange color.. and not expensive.. even here in Australia..
I believe they are used with air brakes in trucks/trailers.
the length of the hoses are: 240mm - 400mm- 620mm and I recommend replacing them all for many years of trouble free driving.

cheers

Lee in Australia

sb001 · 18 November 2013, 03:48

Thanks Lee-- I will look into replacing those hoses with the brand you mentioned--
The thing is I must somehow still have vacuum, when I pulled that hose off the control valve there was a distinct "whoosh" sound of air being released. Also as I mentioned the autostick shifts absolutely fine. That hose did have electric tape wrapped all around it so it may have been enough to hold vacuum in. But I'll replace them anyway. I think the reddish orange hoses would look pretty cool in the engine compartment of my red bug...

68autobug · 18 November 2013, 15:24

Hi
well sounds like there was vacuum there...
it doesn't matter what pressure is on the hose, just look at the end to see how they are made and that the inner part is thick so it won't suck in or come off the outer part of the hose.
I actually painted some of that red hose yellow... lol
and I think one was green... lol

cheers

LEE

sb001 · 18 November 2013, 17:23

Hi Lee,

Can you confirm that this is the hose you are referring to?:

http://www.fittingsexpress.com.au/product/PFMP

Unfortunately I can't seem to find a USA vendor selling this hose- when I do a google search most everything that comes up is out of Australia. Do you know if there are any USA outlets selling this? Thx

68autobug · 20 November 2013, 02:02

HI
i thought seeing it was made in the USA it would be common over there.. maybe just try a truck/trailer repair shop..
maybe the other one is available RMD1012 TOTALFLEX MULTI NON-CONDUCTIVE 12MM 1/2" 1200 PSI BP
that hose looks like it would last forever... very good construction.
maybe they are so common in the USA they don't need a special website?? try a few truck repair shops... it should be cheaper than the Australian prices.. best of luck..

Lee in Australia