911sc spark question
 

Hey everyone!
I just bought a 1980 911sc it isn't getting any spark at all from the coil. I had a extra coil at my shop so I tried that and still nothing. I also checked to see if the negative and positive side was getting power on the coil and it wasn't. My question to you guys is, is it my CDI box? I checked the harness to the CDI box and its getting power on I believe prong 15 (The top middle)

Green wire working?

I'm not around the car right now but is that the wire that gets constant power when you turn the key on?

the green wire is a coaxial wire that runs from distributor to the cd box. there are lot of threads about it which can be found with a search.

If so then yes it's getting power and the fuse for all that ( I believe fuse 22) works as well

the CD unit should have a hi pitched whine to it. if it does not, then it is definately bad. if it does, you have a 50/50 shot at it being good.
the trigger unit in the dist can also be bad along with the green wire fromt it to the CD.

i dont know why people wont say their location. someone might see that they are close and offer help, or the use of one of my 2 spare CD units.

Today I checked the green wire and its good. The CDI box makes no sound at all so I checked a few other things that the Bentley told me to and it is definitely the CDI box

CDI box should 'whine', if not then it's goosed (mine was).

Thanks so much for your help. It was the CDI box. Put a new one in and she fired right up