Rubber Tee Piece between servo pipe and carb.

[BOXY]

I just wanted to know if anyone has got jubilee type clips securing the tee piece that fits between the servo hose, balance pipe and manifold on the left hand side of the engine bay?

When I was trying to replace my 009 dizzie I noticed the tee piece was just pushed on to the metal pipes without anything to secure it so I fitted three jubilee clips. This afternoon I noticed that after running the engine for a while the tee piece had softened up enough to start getting sucked flat? Since fitting the jubilee clips I have noticed that the "feel" on the brake pedal varies from "normal" to "why aren't we stopping?" I suppose if the tee is getting sucked flat that would explain the random loss of servo assistance? So should the tee piece be clamped at all, or has fitting jubilees highlighted a different fault in the servo line or elsewhere?

[Albatross]

All joints clamped on my 2 lt CU air cooled, both R & L. Brakes seem OK.

[BOXY]

Cheers
I've pushed the metal pipes into the tee a bit more to help support it and stop it getting sucked flat. The brakes have been ok for the last couple of days .

[charliemags]

Hi Boxy, we are having this problem with our van. We ended up clamping with jubilee clips but it was still sucking shut when hot & eventually blew the t peice to shreds! Replaced today, went out for a test run and it's still popping off once hot- the engine gets hot, starts misfiring and then it goes. Limped home again!!

[BOXY]

I think your problem might be caused by the fuel / air mix igniting in the manifold and that's what's forcing the tee piece off or blowing it to pieces. The tee piece should be under negative pressure so shouldn't "pop" off.

Maybe someone else will have a different theory but if the inlet valve isn't closing properly it could be combustion gases "popping" the tee off? It might be worth getting a garage to do a compression check & leak down check to see how healthy the engine is.

[charliemags]

thanks Boxy!
clare x

[daz1973]

i just replaced mine but it was never clamped in place and was knacked beyond belief , it never popped of thou !