I have developed a mis fire that I am going to trouble shoot, and I want some idea's. So far I have not done much, but I know it happens as the car heats up to operating temp. My CHT resistence warm was 60 ohms. I am suspecting trigger points, because if I push and prod the connection by the dizzy, the cylinders that are missing come back to life. About the FI grounds, can I access them without taking off the phlenum? If so, How? The triggerpoints control injectors in pairs. Is it 1 & 3 and 2&4? If the pos/neg battery terminals are not connected properly effect the firing of the cylinders? Thanks, Chris