Starving for fuel? 07FXDWG

[NewHawk]

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

[NewHawk]

Bump
Intake manifold leak?

[BVBOB]

Check your injector wires at the plug, you may be dropping a cylinder at times.

[HDWRENCH]

What tuner do you have?? I see the engine mods and there is no canned map that is going to work well with that.

[Waffen]

I had a similar problem in Sturgis couple of weeks ago. Same symptoms. I stopped a a gas station on Iron Mountain filled up waited for an accident to be cleared up then took off. Sputtering, coughing, backfiring you name it. It turned out to be some nasty sediment in the gas. I did not notice the very small refueling truck filling the gas holes while we were filling up. I drained the gas, cleaned out the carb, and crossover tube between the tanks and off I went..

Don't know if this could be your problem but crap in the gas sure caused me similar issues.


W

[NewHawk]

Originally Posted by HDWRENCH

What tuner do you have?? I see the engine mods and there is no canned map that is going to work well with that.

It was tuned using a direct link. Tune is great, 16k on the tune.
I have drained the gas tank. I did find a code PO373 (intermittent CKP sensor) and replaced the sensor, bike still acting up.

[claydbal]

rear injector wire is notorious for breaking inside the plastic.

[NewHawk]

Originally Posted by claydbal

rear injector wire is notorious for breaking inside the plastic.

Replaced pins on 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 suggestions guys.