Want to know about secondary tensioners and more, then this video will help. Here is ten important facts I learnt changing the cam chains, tensioners and guides on my 1996 Jaguar XK8 AJ26 NA engine. The video tries to answer the common questions people ask about early plastic secondary tensioners, how to check them, tools for changing them, typical kits and also includes some advice I've learnt from others and by changing them myself. This especially relevant up to and including early MY2002 cars