In my 1990 Brumby there is a fine hose with an outer diameter of about 2-3mm running through the firewall close to where the fuel send and return and tank vent lines go through. Its connected the intake manifold by a "screw on barb" with a regular sized vacuum hose which then stepped down to the finer one that runs through the firewall. I cant find it anywhere in my dodgy service manual and I would like to know if anyone knows what this line does?

 

Cheers

That is the vacuum line that goes to the HVAC controls on the dash. If is not hooked up you cannot control the venting of the HVAC. ie. the defrost versus the floor for the heater.

 

 

 

QUOTE=BobBrumby]In my 1990 Brumby there is a fine hose with an outer diameter of about 2-3mm running through the firewall close to where the fuel send and return and tank vent lines go through. Its connected the intake manifold by a "screw on barb" with a regular sized vacuum hose which then stepped down to the finer one that runs through the firewall. I cant find it anywhere in my dodgy service manual and I would like to know if anyone knows what this line does?

 

Cheers

They are vac controlled, but here in the states the line is regular sized vac hose, and is located on the passenger side of the firewall..... where are you fuel lines over there? Here they are on the drivers side.....

 

GD

Yeh my steering wheel is on the other side so i supose it would be on the drivers side for you yanks. Hmm so i think illl leave that one then?