Runs rough, runs rich, won't idle

[maine-e-axe]

Check the ground wire from the battery to the ground. The ground on the motor end could be dirty.

 

[jaxdwg]

Ok, here is what I got: '02 Dyna WG, stock as far as I know.
Supposedly running reasonable, then coming to stop light, started running rough, won't idle, black smoke out of pipes, black spark plugs.
1.Done so far: Diaphragm had a chunk out of the lip – replaced – no change.
2.Intake manifold o-rings chewed up a bit – replaced – no change.
3.Error code – 02 – MAP sensor – replaced – no change.
4.Took to dealership, had error code reset, seem to run ok, my opinion, it was idle to low.
5.Next morn, same problem as at beginning.
6.Dealership didn't say any problem with ignition module.
7.Changed spark plugs – no change.
8.Check coil – resistances ok – no change.
9.Someone hooked up LED lights – did terrible wiring in tail light – fixed – no change.

I think I have basically run out of options.
Anyone got a solution I haven't looked at yet?

Happy Trails.....

Did you just get it or have you had it for awhile? Was it running good and just recently started doing this, or has it been doing this all along, need somemore info. I have an 02 wg carbed and haven't had this problem.

 

[JDRedneck]

It's not mine, customer bike.
He said that it was running ok, then when he came to a stop light it wouldn't idle. Seems to have happened sudden, but can't be sure.

Happy Trails.....