Once again I need to pick your brains. I have an 01 FLHTCI with 10000 miles. Today, out of nowhere the engine started bogging down on acceleration. I have to open it up just to get the bike to move and it sounds like it is pulling really hard ( has nothing to do with transmission). On the freeway I started to go up a hill and I couldn't keep it at speed, it slowed to 40 mph. If I back off the throttle a bit it surges a little bit, like it is trying to run normal. (plenty of fuel).

Thoughts, suggestions please.

 

Engine Temperature Sensor more than likely, but you will also need to check the Cam Position Sensor and Crank Position....

Isn't this the same issue that you had inquired about before???

 

No, this is a brand new problem. The bike is extremely hard to drive now. New information, the rear cylinder is cold and the spark plug is dry.

 

Well I was hoping for some help. Waiting for the tow truck now.

The rear cylinder is for sure not firing. I don't know if it is safe for me to drive or not.

-Pulled the plug wire and it is getting a spark.
-Swapped the front and rear spark plugs and the front cylinder worked fine but the rear still didn't

 

Injector wiring, faulty injector ground in the ECM, there is no real good way to bench top diagnose something like this without seeing the scan values of the ECM...

 

Let me ask you this, is it safe to drive on one cylinder?

 

Only if it is a Buell Blast....

 

And the outcome is a defective 3 week old spark plug!!!!
(Broke down internally)

 

thanks for the update!

 

Good to hear that is all that it was!!
I carry spares in my tool kit. NGK's.
Scott