New to forum heard this was the best place to go. The car is a subaru legacy outback w/ 2.5 DOHC engine about 150,000 miles girlfriend bought the car used about 40,000 ago first problem shes had and it giving me a RASH! I am having serious issues with timing belt keeps slipping a few teeth. I have replaced from start to now still having problems put puts at lower rpms while driving and slips a few teeth in the timing. I have started w/ plugs and wires then replaced crank and cam sensor (both new) then replaced w/ new timing belt. Still had issues realigned timing belt belt slipped a few teeth again. Replaced timing belt tensioner new from napa. still have issues. bearings seem good on cam idler pulleys ( I think). could it be a failing oil pump? I am sick of going in there and not fixing problem any insight as to what could be causing this slip in timing belt. Running out of patience but still willing to address problem