Mazda Protege Noises Knock

My Car Has A Knocking And A Friend Told Me Its Cause A Piston At One Point Didnt Have Any Compression So He Told Me To Use Lucas To See If...

My Car Is Knocking Really Bad When I Turn The Wheel Left Or Right (while Driving) And It Seems Like My Transmission Is Slipping

I Have A 2003, 1.8 Dohc,automatic W/od. I Pulled Out On The Highway And Pushed Into Passing Gear To Get Up To Speed. Then I Started Hearing...