Hi ive just removed water pump and replace is it worth fushing the whole cooling system radiator ? is it easy?I have also heard scare stories of plastic impellers spinning or breaking however my experience is different. I have been changing cam belts and water pumps on audi's for 30 years, I must have done 20. In my recollection I have never even seen a metal impeller. Plastic has always been what came off and what I put back on, never had a problem.
Trevor
The surface of the tensioner touching the belt should spin.one more question should the cam belt tensioners spin once tighten?
You mean the black plastic part of the tensioner?The surface of the tensioner touching the belt should spin.