Rich Running Problem

[boale]

Wondering if anyone has worked this problem. I'm currently running PCV with A/T and have developed a rough running issue at low power settings. Had the bike put on a Dyno and the AFR was really low, 9.0-10.0 at idle to 2%, then normal above that at 14.0. Ignition, coils, plugs, etc. check okay. I disconnected the PCV with A/T and the bike still ran the same. Any thoughts? I'm leaning toward ECU or fuel injectors. I would consider a bad fuel injector if the problem was throughout the power range but clears beyond 2% throttle.

 

[Dennsell]

Wondering if anyone has worked this problem. I'm currently running PCV with A/T and have developed a rough running issue at low power settings. Had the bike put on a Dyno and the AFR was really low, 9.0-10.0 at idle to 2%, then normal above that at 14.0. Ignition, coils, plugs, etc. check okay. I disconnected the PCV with A/T and the bike still ran the same. Any thoughts? I'm leaning toward ECU or fuel injectors. I would consider a bad fuel injector if the problem was throughout the power range but clears beyond 2% throttle.

I have had similar probs although never dynoed mine.. my solution was I suspected a ECU map problem reloaded the map and reset the PCv-AT maps and all was well after.

If you don't have a copy of the original Dyno map you probably can't do this.

Corrupt ECUmap maybe ?

Someone else may have a better suggestion..