scz
Most good tuning shops will have a distributor test rig.
The problem is they might say that is is fine and I put it back in my car, then I move on to the next thing but the dizzy is still at fault because I trusted their diagnosis. I have spent far too much time and money with this worn EFI system. The only 100% working components are the ones I have fitted new.
I have ordered a brand new mechanical and vacuume advance dizzy for 4age along with a fuel reg to suit bike carburettors (3.5 PSI), these fitted along with re-jetted mikuni carbs and a manifold to suit will allow me to remove a butt-ton of hoses and wiring and in general make the car easier to maintain and diagnose faults when they happen. There aren't enough aw11 parts in adelaide or Australia for that matter for me to acquire them as I need them and this reason alone means I need to convert to a more common efi system or carburettors. (sorry for rant)