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Harley Davidson Expert
Re: 2003 F.I. Softail
Sounds like a mapping issue with whatever f.i. add on you have. could also be the pintle sticking on the throttle body. take the air cleaner off, look at the inside of the throttle body. at the top there will be a little hole. that's where the pintle is. it retracts and expands for cold starting and hot idle as well. if you turn the bike on and off it should cycle. ( extend and retract ) if it doesn't then the pintle needs to be replaced.
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i take it its carb. after it warms up to operating temps does it stop the sputtering? thats just a HD CV carb doing what it does til hot. Im not talking a 2 min warm up and off u go im talking operating temps of 200 plus. Is the carb an S&S? Your going to have high rpms til the temp kicks it down if its injected
kev, check you have the right level on your dip stick, oil must be on upper mark when donk cold.also ensure you are running the correct oil weight for your donk. engine may be running hot; which means one way oil can go missing is its being burnt. also check your primary drive,clutch oil level ,not sure as i have 80cube evo, but you may find your oil in there due to bad oil seal internally. im no expert but these may be of help. regards george
Here is a few tests you can run. First with the bike off take a
multimeter in VDC check the battery voltage at the battery. (should be
at 12.5 VDC) If not first charge the battery. Second start the bike,
with it running and multimeter again in VDC check voltage at the
battery while slowly opening the throttle(should see between 13.2 and
14.5 VDC at the battery) If you have more then 15 VDC then you have a
bad voltage regulator. If you have less then battery voltage from the
first test. You may have a bad stator and/or a bad voltage regulator.
Third test with bike turned off and multimeter in continuity. Place one
meter lead into either of the two holes for your stator lead(coming out
of the front of the primary drive case) the other meter lead to any
good ground. If you get a tone or continuity then you have a grounded
stator, and it has to be replaced before proceding any further with
charging system tests. If you do NOT have continuity then check the
wires from the voltage regulator running back to the battery for any
breaks or chaffing, if none are found. I would have the battery load
tested as well.Good Luck and thanks for usinf Fixya.com Let me know what you find please.
sounds like an overly rich condition when you let throttle snap shut no air enters or at least minamal air enters the engine and with to much gas the engine will bog down until the extra gas burns off(5 seconds) check floats height and make sure jets are secure and make sure the choke is all the way off
What u are describing is typical of a faulty ignition system, but could also be a fuel problem. I check by removing the aircleaner and rotating the throttle. If u see a nice spray of fuel, thats probably not the problem. Check for a spark at the plugs. I can explain how if you need me to. If you cant see a good spark, U have an electrical problem. I had a crank position sensor go bad on me. Dont do what I did (replaced the battery, ignition, and regulator as part of my diagnosis procedure)
THERE THE POWER I BELIEVE COMES THROUGH THE LOW BEAM SWITCH ON THE HANDLE BARS........I AM HAVING A PROBLEM WITH THE DRIVING LIGHTS STAYING ON WHEN I SWITCH ON MY HEADLIGHT MODULATOR.............MODULATOR USES THE HIGH BEAM SECTION AND YOU MUST HAVE HIGH BEAM ON TO WORK.............THIS CUTS OFF THE RUNNING LIGHTS........AM ATTEMPTING TO CORRECT THIS PROBLEM..
had the same issue with an early twin cam that belonged to a buddy. he had this wierd kinda intake thing that looked like the intake with the round flaps that you used to see on a hot rod back in the day. I don't think it did anything but look cool to him.
but anyway it was crazy hard to warm up when cold. if you are starting this bike in an ambient of 40f or less it will take some time to warm up. which I don't understand because the twin cam runs hot like 220 plus. give it extra time to warm up in cold weather. might be nothing wrong with the bike... I mean maybe what your up against isn't a breakdown of the machine but poor engineering (WHO SAID THAT?) anyhoo I've seen it too and everything was tip top far as the HD cronies said