Question about 2008 Harley Davidson FXD Dyna Super Glide

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My 2006 dyna fxd spits and sputters, looses power then regains power and back fires. I replaced the battery and regulator cover. What could be my problem?

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  • Harley Davidson Master
  • 3,506 Answers

Why did you replace the battery etc? Did this start before or after that? Could be a number of things. When does it happen? All the time or upon acceleration etc? I would start with a new set of plugs and go from there.

Please post a comment if you have more information to provide or if you get an answer etc.

Posted on Nov 15, 2014

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 29 Answers

SOURCE: When bike gets worm it runs like ****

Since you have thrown the entire ignition system at it, let's think about fuel. If you were running out of gas it would act as you described. I would start by removing the float bowl. Be careful not to spill any gas because we want to look at the level. It should be over half full. Check the float movement. You should be able to push it up without resistance. Looking from the bottom remove the phillips screw that retains the float axle and the float and needle valve should fall out. If the needle valve has three sides or if the rubber tip is worn, replace it. The 3 sided valves have a tendancy to stick closed and all dealer stock should be the 4 sided version by now. After you re-install the float, leave the bowl off and follow the small vacuum hose from the petcock to the carb. Pull it off at the carb end. Look to make sure it isn't damaged. **** lightly (sorry) or use a vacuum pump on the hose. With the petcock on and gas in the tank, a healthy stream of fuel should pour from the needle valve. If not, the petcock diapragm is shot. If none of this helps, take it for a ride and when it acts up, crack the fuel cap loose and if it takes off the vent in the cap is malfunctioning.

Posted on Jan 05, 2009

goofduck
  • 490 Answers

SOURCE: my 2006 dyna street bob efi back fires

that is usually caused by a too rich main jet
dumping too much fuel and it is igniting it in the pipe

Posted on Apr 16, 2009

  • 72 Answers

SOURCE: spits sputters and backfires

carborator needs to be cleaned and the float needs to be reset

Posted on Aug 24, 2009

  • 69 Answers

SOURCE: not charging the battery as i ride 2002 dyna fxd

heck all connections especially the one thru the motor to the regulator-check battery to make sure levels are good and have it load tested

Posted on Sep 05, 2009

DJ_MAX1369
  • 119 Answers

SOURCE: how to change oil in 2003 HD FXD Dyna Super Glide

remove the drain plug from the oil pan, you will need either a 3/4" box wrench or a 5/8" box wrench and the drain plug will be facing forward on the the oil pan. It is easiest to remove this drain plug from under the right side of the bike. put drain plug back in after about 10 m,inutes of drain time and tighten to 18 ft. lbs. Dont forget to change the oil filter as well.

Posted on Oct 28, 2009

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O.K. HERE GOES CLOGGED OR DAMAGED AIR FILTER CLOGGED OR LOOSE PILOT JET(CARB) DAMAGED CHOKE INCORRECT THROTTLE ADJUSTMENT '' CARB '' BAD GAS DAMAGED BATTERY,SPARK PLUG,IG COIL,IGNITER UNIT,PICK UP COIL INCORRECT VALVE CLEARANCE,ENGINE OIL VISCOSITY TO HIGH,LOW ENGINE COMPRESSION....I know its a bit of a list but I hope it helps.good luck.Start with spark plug,air filter,if all good,go to the carb next.

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1 Answer

Battery good, regulator good, stator good, battery won't charge


you have caused a wireing fult thats all, it likely to be a bad earth on the bars or you may have blown a fuse by shorting some thing out when you were doing the work start checking the wireing out with a meeter start from the regulator you should have volts from there back to the battery check for a main fuse as well

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1 Answer

Not charging the battery as i ride 2002 dyna fxd


heck all connections especially the one thru the motor to the regulator-check battery to make sure levels are good and have it load tested

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1 Answer

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First thing I would check is your regulator, a small rectangular box, that regulates electrics.

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