To figuer out if it is problem with the CD module, switch the triggerwires at T1 and T4 (put green at T1 and white/blue at T4) then you have to change # 1 ign.coil to + ground and # 2 to - ground.
Now the T1 output operate # 2 cyl. and T4 output operate # 1 cyl.
If the problem now moves, then there is a problem with the CD module. If not there seams not to be a ign. issue.
Now the T1 output operate # 2 cyl. and T4 output operate # 1 cyl.
If the problem now moves, then there is a problem with the CD module. If not there seams not to be a ign. issue.