1. My A15 is happiest around 13deg. if it's not pinging, give it the advance it wants.

2. The tiny bolt on the bottom is an adjuster but not the main one. the other should have the head of the bolt on the top near that. have another look.




3. All A's have the same - 1342. the dizzy shaft turns anticlockwise and when youre standing on the right side of the car looking at the dizzy, # 1 should be around the bottom right sort of area....ish . 3 is next anticlockwise at top right, 4, then 2.

4. Unleaded should be fine. Mine loves Premium 98 octane and stops it 'running on' at switch off.

5. Gregories and Scientific Publilcations are pretty much the same and dirt cheap on ebay. They'll tell you what you need to know most of the time. Proper Nissan ones kick ass over these but are as rare as rocking horse $hite.