As above suggests, The car in question is LJ XU-1 it runs on BP Ultimate 98 I took it for a long run 160 ks and coming up the Toowoomba range in top gear and gave it some gas and you could here it ping so I dropped it back to third to stop it apart from that it seems to be running fine.
So what have I done or haven't done?
Carbies out of tune? I haven't tuned them for quite a while.
Stale fuel or inferior fuel? I put $70 in it and also put some fuel conditioner in.
I haven't checked the timing yet, it has a Petronix electronic ignition installed 6 years ago.
Thanks in advance. John.