1996 Holden Commodore misfiring and spluttering

First thing I would do is get the computer (OB2) scanned. This will make it easier to help in the diagnosis. Most auto part stores will do this for free. When you get the codes, write them down and let me know what they are. There are many problems that could create this symptom and without speculating for hours let's try this out first and I'll be happy to help you out in finding the problem.

Thanks, look forward to your reply

Sean