HARLEY 2007 softail custom. tip needed for cleaning fuel injection picked up dirty fuel two seperate occasions. coughing its head off. have been useing wynns octane additive and at 7ron

LOOSE WIRE.

(To check for leaky injectors, first remove the air cleaner and then with the throttle wide open, turn the key ON for 2 seconds and then OFF for 2 seconds five consecutive times and look fro any sign of fuel in the induction system. If there is any you will need to replace the fuel injector(s);

Hi, Anonymous if your carburetor or exhaust is:
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp build-up of oil/gas seepage at the intake manifold to the cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build-up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
SPITTING is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below and for more specific information or questions at no charge please feel free to contact me at [email protected]. Good luck and have a wonderful day.
https://www.hdforums.com/forum/dyna-glide-models/1193693-carb-cough-issues.html
http://www.mediafire.com/file/65o6mbkdq5ty8ke/99_to_05_Harley_Softail_Service_Manual.pdf/file
https://partsfinder.onlinemicrofiche.com/ronnies/showmodel.asp?make=hdmc
https://ownersmanuals2.com/harley-davidson/softail-deuce-2005-owners-manual-66406
https://www.6ya.com/

You'll have to check with either a dealer or look in a "Black Book of Motorcycle Values" to see if H-D offered that year model with fuel injection. Look for a listing for a FLSTCI. The "I" indicates that the bike was fuel injected. I don't think fuel injection was available on the Softail until 2003 but I may be wrong on that. I am not a dealer nor have I ever worked in a Harley dealership. I'm an independent mechanic that worked on Harley-Davidson for years. I'm retired now.

Good Luck
steve

If it's fuel injected, your dealer should be able to remedy that problem, it sounds like it's running a bit lean. He'll have to change the fuel delivery a tad.

Good luck
Steve

could be alot of things, most likely the ignition pickup, or control module, is it fuel injected or carb? It could also be bad coil.

Fuel clog in carb or injector, or the magnetic pick up for the electronic ignition.....the spark plugs need to be checked also....lots of variables, but thats a start

F means it has overhead valve "big v-twin"
L means wide front tire
ST-Softail like you thought
N-Nostalgia like you thought
I means fuel injected (they used to offer with a carb)

hope that helps