Thanks Alex, I've had the screw driver to the ear and it sounds quite loud at the front top front right of the engine so that could be a tensioner issue. However, when I got under the car it sounded loud there too but couldn't pick up anything with the screw driver trick. I have an 07 rev up engine, I'll take it to the garage and see if they can better locate the sound but may have to consider the replacement option. I'll PM you reference that if that's Ok. Thank you.