vacuum loss from hole?

[Robin-535im]

"Vac loss from hole" - IIRC Winfred had a pic of a guy running a barbecue that way.

[Phil Sanderson]

...with some rubbery goop. It looks just like yours. Block it off.

regards
Phil

[Blitzkrieg Bob]

There was a nipple with a rubber cap on it.

Looks like yours got snipped off. Just plug it with a small screw and gasket sealer.

[DaveVoorhis]

Have you got any pics?

Yup.

[632 Regal]

dude, isn't some of these non tapped? some pull vacuum and others are blocked I think. The only way to tell is have it idle and stick your finger up to it or anything else youll feel it from. If theres nothing to attach it to then plug it. If it needs plugging id squeeze some silicone in it after work so it can dry overnight with the engine heat.

[Blitzkrieg Bob]

Be careful with that silicon, O2 sensors don't like it.

[genphreak]

dude, isn't some of these non tapped? some pull vacuum and others are blocked I think. The only way to tell is have it idle and stick your finger up to it or anything else you'll feel it from. If theres nothing to attach it to then plug it. If it needs plugging id squeeze some silicone in it after work so it can dry overnight with the engine heat.

On all M30 (535is) there is a similar vacuum take-off that was covered with a rubber bung. On mine the rubber had deteriortated and when I was checking for vacuum I broke the 2cm pipe off with my finger it was that brittle. Bought a new return valve from the stealer, but had to get a new bung to seal it.

This is a great place to pull vacuum for accessories, silly to leave it vented to the atmposhere of course; if your car has no use as previously described in the thread, just seal it off. Nick

[fujioko]

Wow, small world!

I heard a hissing sound yesterday and I discovered a “hole” in the check valve for the power brake booster. Apparently the bung and cap busted off. My quick and lazy fix was several wraps of electrical tape. Problem solved.

[genphreak]

Wow, small world!

I heard a hissing sound yesterday and I discovered a “hole” in the check valve for the power brake booster. Apparently the bung and cap busted off. My quick and lazy fix was several wraps of electrical tape. Problem solved.

Yes, its full on with that silly hole. The heat is intense under the hood so tape may not last. I would suggest a very small self-tapping screw with some eurethane or sealant of some other kind over the thread. The kind that are used to screw cassette tapes together are ideal. Nick

[mkovic]

I was just meaning to post a question asking where this vacuum hose should go. Mine appers to be broken from the other side, but it's definitly going somewhere from this hole.