My heater stopped working the other day and after much trawling through the forums and crawling under the dashboard I am 99% certain that the vacuum hoses are the problem.
However, ever since I've owned the car the brake pedal has been rock hard and although initial bite is very good, it requires an almighty shove on the pedal to get the car to stop. I think that my problem might therefore be a bit more than just the heating system vacuum pipes so I want to give the whole thing a check over but my service notes don't have the pictures and diagrams I need.
I've taken this photo of my engine:
The smaller pipe (no1) coming from the manifold disappears into the right hand side panel just beneath the air filter housing. The bigger pipe (no2) disappears down under the engine.
I think that no1 is the brake and heater vacuum pipe but everything have read here says that this gets to the front of the car via the left hand roof channel, not the right. Before I go trying to get the engine bay side panels out to see where the problem is can anyone tell me whether I am following the correct pipe? Last time I had the side panels out I seem to remember that something looking suspiciously like the vacuum reservior was located above the right hand fuel tank.
Also, what is the second pipe for?
Are there actually separate vacuum lines going to the front for heater controls and brakes or does the heater control tee off the brake one? The service notes suggest that only HC cars have a tee off the brake line for the heater controls whilst mine is an 85 Turbo.
I'm stumped.