Hi there, You are lucky that I have just rebuilt my Mk1 1.8 from scratch. It was the first time as well, so I took photos so that it would go back together properly.
There are a few hoses to look for. There are two on the back of the throttle body - one of which has a 'T' shaped fitting on it.
Just underneath the Ignition Coil Pack where the HT leads fit, there should be a 'T' shaped fitting there, these have a nasty tendancy to split. I have altered the picture to give you an idea how it goes. End c. is as you see it, end a. fits to a small pipe tip on the engine block, and end b. fits onto a vacuum pipe that runs from the front of the bottom engine block and just underneath the HT ignition block.
And depending on how much has come out or gone in, there is a steel vacuum pipe that splits three ways and runs from the exhaust manifold around the passengers side of the engine. The picture illustrates two pipes (they are different diameters and will only fit one way), the third runs into the valve just to the rear of the HT block.
This valve also has a small vacuum hose that fits to it which is also illustrated.
Other than that the only other vacuum hoses I disturbed was the brake cylinder vacuum hose.
I hope this helps you.
Best of luck :driving:
