110 ground issues?

[Jim mac]

You folks are probably tired of these questions but, on my 110 a threw the motor back together got some compression, it actually fired a couple of times.
problem is no spark. I can take the plug and put it against the frame and I get a nice blue spark but when I lay it against the cast iron cylinder head it becomes more redder and doesn't snap as much.
then when I put the plug against the aluminum cylinder head I get no spark!
could the bolts that hold the motor in corrode or oxidize enough to lose conductivity?
Anyone else ever have this problem? I swapped the coil and CDI back and forth,and they both act the same.
there is a ground wire from the stator that the old one didn't have should I just ground this out to the motor? or back to the harness. Ive got it to the harness now.
thanks Jim

[TeamGeek6]

For giggles, get a hose clamp and 2 feet of wire, clamp the wire to the spark plug shell, and ground the other end to the frame. Fixed perfectly and permanently! Yes, oxidisation is a problem, especially on aluminum, al-ox is an extremely good insulator.

If youve got a wiring diagram I might be able to answer the ground wire question, but try the spark plug ground first, I bet that will work. The stator ground (for the coil that drives the CDI power) should go to whatever ground system goes to the CDI.

[Jim mac]

after thinking about it last night< I realized I didn't have another plug, even though it looked good, I had a spare plug for my 200s wrong plug but it fired just fine.
So, I got a new plug for a 82 the honda guy said the plug I had was for a older model, anyway the motor fired fine, now I need to get the carb cleaned up and see how she really runs. It does smoke alot, maybe gas? it ran at night so I dont know if its white smoke blue smoke etc. but at least it runs.
Now if it will shift, it may be worth fixing the thing up or if I decide to sell it I can at least get my money back out of it, as a running trike. Jim