1985 Honda ATC70 weak/no spark

[Kingcricket]

Yea with that battery hooked up the light just went dim not off completely so there must be even a little continuity even when the points open

[RubberSalt]

What if it's the ignition coil?

http://www.3wheelerworld.com/content.php/191-ATC70

[Kingcricket]

He said he put a new ignition coil on it

[HoldMyBeer]

Ok. I admit it. It beat me. I'm done. Timed it with a battery and light like the video and still can't fire the plug. I've rebuilt all sorts of things. Take it apart and "That's broken" and replace it. I give up on electrical. Doesn't make sense. I'll post something when it's running. Thanks to all for the advice but as of now it broke me. This is why I replace points with pertronix igniters. Electricity = Satan. All you need to know is don't mess with it

[Kingcricket]

You'll get it hopefully important stuff may be alright now, look at the dumb stuff like not having the spark plug wire pushed in the coil all the way or having a rusty ground. Never hurts to post pictures of ignition coil either.

Maybe be better off just to clean all your old parts stator points, etc and put them back on maybe they gave you a 12v stator/capacitor instead of 6 volt.

[HoldMyBeer]

SOLVED!!!! It was the new IGN coil. It listed as compatible for the ATC70 but obviously not. I bought a new plug wire and put the old coil back on and it started first pull. I usually don't cry over 3 wheelers but I may have a little when it hit right off the bat. So I'll post the things that helped me in a separate thread later for all those people trying to get spark out of a 70. Thanks to all who replied.

[Kingcricket]

I think that may be a lot of people's problem. They buy new compatible parts that actually aren't and rack there brain going crazy. Great anyhow glad you got it goin.

[Rmac86]

I realize this is an old thread, but just wanted to second what HoldMyBeer discovered with the coil. Had been having some firing issues with my 2 70's over the past few weeks, so ordered all new points, condensers, coils, etc. off Ebay. Picked the better of my two 70's as a guinea pig yesterday and threw it up on the work bench, changed the oil, pulled and cleaned the carb, replaced the float, went ahead and tackled the new coil swap for now until my flywheel puller comes in to do the points. I had just rode it around the block and got it good and warm to drain the oil, so knew there were no issues with the firing system at that time. Did all of the above and when I tried to start it again it would fire but very weak. Pulled and pulled and would never crank up. I swapped the old coil and pulled once and the dang thing backfired from all the gas loaded up in the cylinder and fired right up. Replacement coils look identical, cant find any visual reason they wont work, but just wont. The fire the one I swapped out produces is very weak and hit or miss at times, not enough to fire the bike for sure.