Need help diagnosing a problem with my bike. When I start it up it runs fine but when I take off at a slow pace the rear cylinder cuts out. At highway speeds or if I am accelerating it runs smoothly but if I am riding slow it will cut out and then kick back in as I get into the throttle. This problem just started on Monday.

Bike is an 04 road king big bore kit, true dual exhaust, thundermax auto tune, DNA heavy breather intake.

 

Has the battery been disconnected or main fuse pulled before this started?

 

if it is only the same cylinder (rear) do a compression check first, then look at the rear injector,,,also i would not discount a bad spark wire, plug or coil.....

 

Well I made it home with no problems once I got out on the road and got on it. I checked the plugs at work and they look good. Dont really know how I would go about checking the coil since it only happens sometimes.

Neither the battery or the main fuse have been changed in a while.

 

Also since I have been home I hooked the laptop up to the thundermax to check for any codes and got nothing. I monitored everything and it was all looking good. I took the airfilter off and cleaned the throttle body, and everything which had a good coating of oil from the breathers, and tomorrow I am gonna get some injector cleaner to put in the tank when I fill up and see if that will clear up the issues.