I have recently developed a problem. Cruising around in town or on the highway the bike suddenly feels like it is running out of fuel, will backfire and the engine will catch again. Sometimes it will do this 3 or 4 times in a row (starve/backfire/catch). It just started last week.
It feels like a fuel problem not a lack of ignition.
Any suggestions on where to look?
I have tried a couple things but would like to hear all suggestions.
TIA

 

Bump
Intake manifold leak?

 

A leak at the fuel pump pressure connection inside the tank. Got one in the shop waiting for a pump that is on back order.

 

Got a PO373 code so I replaced the crank position sensor, didn't help but it didn't throw a code (right away). Drained gas tank a couple times, couldn't reproduce the intake leak test an indy did for me. I even pulled the fuel pump and found no leaks.

Replaced pins on fuel injector connector just for the heck of it. Started bike, seemed to run fine. Dropped it off the lift and it ran worse than before. I tried so many things and when I would drop it off the lift it would run like crap on a run around the block. Finally had it towed to Harley dealer yesterday afternoon after getting 2 CPK faults (I had already replaced the crank position sensor).

One thing I failed to notice in all my attempts is that the bike ran fine on the "frame" lift I was using but when I set it on the ground it would soon begin running like crap.
At the dealer's they used a "table" lift and quickly traced the problem to a fault in the main harness between the CPK sensor and the ECM.
I'm guessing that when on my lift with the rear wheel/swing arm hanging down the fault wasn't faulting.
ANYHOO I got the bike back and will run a tank of gas driving around town making sure it works before anything long distance.
Thanks for the suggestion.

 

DO NOT rule out that this could be an electrical issue.
Scott

 

It was an electrical issue and I'm hoping that is all it is. They ran new wires from the sensor connector to the ECM. Riding today should tell me if it is fixed.

 

Please post back Newhawk. I'm dealing with a very similar problem on my '07 Road Glide. Already found a bad wire between the ECM and Throttle Position Sensor. Replaced it, but still not running right. Bike is at the dealer now. Supposed to get an update tomorrow.

Zach