Thanks for that help, the ecu is already in the post.
I did think about interference that's way I tested injectors.
I have checked spark plugs and they are correct for engine code. They are NGk plugs! I even done compression test because of misfire. Maybe I should scope coil pack if ecu passes test. What is the best way to test the pack with the scope, do I just scope the primary wire for each cylinder. Any help would be appreciated as I,m new to using picoscope .
Shane