what are the symptoms if your cam chain is blown

 

is it still running? or completely dead

 

what do you mean "blown" ?as in ripped ?leading up to it you hear it rattle like something is loose.

 

when it starts it is after alot of cranking and it does not like to stay running it had a top end tick before this

 

if you can get your timing marks to line up perfectly then is prob "ok" still, but check how far the adjuster is out also. if the timing marks are lined up and your adjuster is almost all the way out, then your on your last leg of the chain