[so2315]

I have a 10323, that has died while mowing the other day. It was running fine, and the carb was gone through about 1 month ago. While mowing it just shut off. There has been moments in the past where it seemed to 'pop', like it lost spark for just a moment.
Here is what I have done and checked.

1.) Started with the gas, drained and refilled even though it was fresh.
2.) Pulled plug, it was wet from me trying to start. Cleaned up and warmed up with torch.
3.) With a warm plug it might fire for a second, but usually doesn't.
4.) Checked for spark while plug was out. There was some spark
5.) Took carb off, cleaned again, checked and blew out all orifices.
6.) Took coil off, cleaned up contacts and reinstalled
7.) Compression is excellent

After all of this it will not fire. I have a new coil coming. Like I said it would run fine, but once in a while it would pop like a car that was shut off and turned back on quickly. Any other ideas? This website has been an invaluable resource for the LB enthusiast.

 

[Shawnlb]

Are you getting a nice Blue spark from the coil or a week yellow or orange color spark. If you have a week spark your CD pack is going out. Just the first thought that came to mind after I read your post. Good Luck! :trink40:

 

[Indy452]

Are you getting a nice Blue spark from the coil or a week yellow or orange color spark. If you have a week spark your CD pack is going out. Just the first thought that came to mind after I read your post. Good Luck! :trink40:

I would second that. In my experience the spark needs to "snap"

Good luck with the duraforce.

 

[Brad]

See you have a new coil coming. My duraforce would not start unless I put a different plug in, then would fire right up and would run after I changed back to the original plug.

Someone suggested a Non-resistor plug, as they supposedly take much less voltage to fire and a weak coil will still fire them. I did that and starts first pull! Maybe give that a shot?

 

[tgore3]

Yeah, CDI module and a new plug is what I'd do.

 

[Orangedotfever]

Plug is cheap to try first and you'll have a spare if that's not it.

 

[sharkey]

Brad is correct. I find that the older Lawnboy CD ignitions wont fire the newer R plugs. In addition, as the newer ignitions age they give up some voltage. The resistor that is in the plug has nothing to do with radio interference, instead its about air pollution. That is the first thing I would check. Go to the parts store or tractor store and buy a Champion CJ-14 or equivalent. No RCJ-14. No 'R' anywhere on the plug or packaging.

The other place I would check is under the shroud where the bail handle brake is bolted on. In that area is a small, usually copper colored band of metal, that serves to ground the ignition when you drop the bail handle. That little piece can become misaligned when cutting around bushes etc and may be a little out of adjustment. The adjustment is first set by bending with a pair of needle nose pliers. Check the wires leading back to the coil and see if there are any bare spots from vibration that can be grounding too.

Best wishes,
Bob