Have you checked the actual plug from number 2 cylinder for spark?
Remember that even if a plug sparks when checked it may not when in the cylinder with compression pressure present if there is any weakness in the HT system. A tester as recommended in post #19 should find any weakness.
Remember that even if a plug sparks when checked it may not when in the cylinder with compression pressure present if there is any weakness in the HT system. A tester as recommended in post #19 should find any weakness.