Originally Posted by bobko
Ah... thanks. I never noticed that there are timing marks on the belt. I just lined up the crank and camshafts and figured that was it.
This tells me you reinstalled a used belt. The marks are on new belts to ensure you have the correct number of teeth between each timing mark, which also need to be lined up to the motor marks. If the tooth count is wrong but the pulleys still match the motor, the tensioner will pull the motor out of time and either run bad or not at all. The marks also make the process alot easier. Your car is running now, but it might be a good idea to put a new belt on soon.....Any Subaru motor after 1997 is going to be interference....so you don't wanna end up with bent valves. Food for thought anyway.