2, possible but unlikely unless it wasn't tightened properly.
Also, it's not the cap that would turn but the whole distributor.
3. No. The adjustment is the same all year.
Make sure the choke opens properly when the engine is warm.
96 T/A, Black/Graphite Leather, T-Tops, 6 speed, 10 speaker Delco/Bose "Monsoon"
Original owner, 206k miles and counting.
Total engine rebuild at 187,020 miles. AIR delete, bored .030 over.
Comp cams Xtreme Energy LT1 266HR-14 street cam and springs.
Custom leather interior at 190k miles. Total repaint 193k Miles
Last edited by NavyVet; 11-19-2013 at 08:51 AM.