rattling and roaring noise while car runs on 1994 Acura Legend

My 94 Acura Legend looks like it was almost kept new. I bought it with over 200,000 miles on it but after seeing the vehicle I could tell it had been taken care of. I drove it over 200 miles home and have been driving the car for 2 weeks with no problems. All of the sudden I start hearing a roaring sound with some rattling coming from the front of the engine. It almost sounds like it's coming from under the timing belt cover but to be honest I can't tell exactly. It is present while idling and louder while driving. Any suggestions?

Asked by for the 1994 Acura Legend
You may have a water pump, timing belt tensioner, idler going out. Have checked ASAP.