ok guys sorry for starting another thread but ive been searching for last few days for a solution and cant find it,

it started with what i thought was a cas prob. starting in morning fine drive 5-10 mins turn it off and it wont start for about another 10 or if it did it would be very rough and go no where, being s1 the balancer was fairly easy to remove no signs of wear so i changed cas and still nothing wont fire all i get is a bang at the 1st crank or 2, also now changed coil pack and dfi with no success any ideas or advice will be greatly appreciated