Hi Frank and David
Thanks guys for coming back to me. You have both given me some things to check out. It sure is a pain as when the Jeep is standing still I can rev her up and down with no change, very responsive, but under load when driving is causing the loss of power and causing the spluttering.
FRANK. The fuel we are sold down here is all unleaded, there is some cheaper unleaded which has Ethonal in it, but I don't use that not even in my normal everyday Jeep. You mentioned a lead additive, I will follow up on that. An old guy told to me to throw a cup full of diesel fuel in the tank and mix it with the other fuel, he claims this will bring the Octane Level down.
DAVID. I will check the spark output as you suggested, If I get a boot who knows I may end up with curly hair. I had already replaced it with new Spark Plugs, High Tension Leads, Coil and Points, however I did not replace the condensor and god knows how old that is.
Cheers
Tony