No Spark!

[steve prosser]

After working our balls off last week giving the machine new springs dampers, wheels and tyres.
took it out yesterday to foxham ran superbly for about a hour and half or so.
Then decieded it had had enough, cut out and refused to go again and ended up havin to tow it home with the Pajero.
Spent a couple of hours looking for the problem there but with out a full tool kit was a bit lost!

It seems to have lost and spark from the coil
checked all the connections, they seem ok
and have battery voltage at the + side of the coil

Any ideas?
BTW 3.5 efi 1987

[Range Rover Blues]

Sounds like the electronic bits of the dizzy have gone west.  You can try running the coil direct from the battery if it's an EFi as it's a 12v coil.  if you can get a spark then it's the dizzy.