[speeder]

Find a good shop that knows air-cooled 911s, you're not qualified to be working on your car. I don't say this to insult you, people's talents lie in many different areas. Yours do not lie in mechanical things.

Wayne started this website in order to encourage everyone to work on their own Porsches so that he could sell more parts directly to customers but the results have been untold numbers of butchered and ruined cars in the 20+ years I've been here. Determining which diaphragm in a vacuum unit move the distributor in which direction is about as complicated as a steak knife. You simply remove the distributor cap and apply vacuum to each nipple and see which way it moves the plate in relation to the direction that the rotor turns. If any of the last sentence confuses you, move away from the car and take it somewhere. Driving around with vacuum advance/retard hoses on backwards could have a very negative effect on timing and cause overheating, among other things. Ignition timing on any engine is important, on an air-cooled engine, it can be life or death.