Question about 2004 Harley Davidson FLSTF - FLSTFI Fat Boy

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Have a 2004 Fat Boy. Do I need to adjust carburator if I change the exhaust from Screamin Eagle to Cobra Slash Down?

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Probably not .... Run it about 100 miles and pull the plugs... if they look OK ( not ash white for too hot or black for too much fuel) you should be OK ....

Posted on Apr 19, 2009

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1 Answer

Adjust air fuel mixture on Harley Davidson carburator


Hi Steve, popping, coughing, spitting, or backfiring through the carburator or induction module can be caused by air getting sucked in combustion chamber do bad intake seals leaking. Leaking exhaust gaskets can also be suspect. Remove air cleaner and backing plate, while engine is idling spray WD-40 or Brake Kleen around intake manifold to head area, if RPM's increase you have an intake leak and seals need to be replaced, also spark plugs will be burning whiter than normal. Good luck

May 16, 2012 | 2004 Harley Davidson FLSTF - FLSTFI Fat...

1 Answer

Handlebars won't stay straight.


If your handlebars don't appear to be straight, the pinch bolts on the lower triple tree may be loose or the rubber handle bar riser bushings need to be replaced. Either way, you'll have to remove the "Tins" from the front end of your Fat Boy to access this area.

Good Luck
Steve

Sep 20, 2011 | 2006 Harley Davidson FLSTFSE Screamin...

1 Answer

I'd like to remove/modify the baffles. Any tips/suggestions? (07 St Bob with Screamin Eagles)


The best solution to this in order to keep performance and sound qualities is to replace your current exhaust.
tho the screamin eagle exhaust systems allow more flow, they are not up to a racing par along with vance and hines or thunder header or so on
screamin eagle is kept in guidelines under the epa so sound is on the lesser side and so is performance,
i would check out thunderheader.net
their systems are the best performing and sound 100% amazing
i will warn you that they are not the prettiest things out their tho
other than that there is on some model screamin eagle exhausts is a small allen button head screw that will remove the baffles. and some don't

Jan 15, 2011 | 2006 Harley Davidson FXDBI Street Bob

1 Answer

Just had a screamin eagle race tuner installed and dyno driving bike at 40mph down road and then it shuts off , can fire back up but have to keep giving it throttle, then all the sudden its fine, replaced...


Hi Carolb656, and the usual suspects are:
1. Severely discharged or damaged battery.
2. Loose, corroded or broken battery cable.
3. Alternator not charging or below normal rates.
4. Failed ignition coil, ignition/electronic module.
5. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor.
6. Faulty ignition switch.
7. Water or dirt in fuel system, carburetor or filter.
8. Fuel tank vent system plugged or gas cap not venting.
9. Fuel tank empty.
10. Fuel valve vacuum line broken or carburator vent line closed off.
11. Restricted, blocked or kinked fuel line.
12. Failed fuel pump, pressure regulator and or fuel injectors.
For a prime suspect please visit website below and good luck:
Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

Sep 12, 2010 | 2003 Harley Davidson FLSTF Fat boy

1 Answer

I have a ninty five cubic inch engine with screamin' eagle race heads,high compression pistons,411 cams with jims power glide 2 lifters,screamin' eagle cam plate,with high volume oil pump,adjustable...


Additional "sounds" or "noise" from modified motors are fairly "normal" when the engines are at full operating temperatures. Changing you brand or weight of engine oil might have a slight effect in sound reduction, but if everything else seems okay then I'd just ride and enjoy it and keep an "ear" on things.

Aug 26, 2010 | 2001 Harley Davidson FLSTF - FLSTFI Fat...

1 Answer

Idel adjustment on fuel injected road king. Not on a carburated system.


Idle adjustment is through the ECM and factory set. If you are having idle issues there are potentionally a number of reasons why*. If you are just wanting to change your idle speed then you would need to purchase an interface such as the Screamin Eagle Race Tuner.

*IAC - Idle Air Control motor
Throttle Position Sensor
Injector malfunction
Intake Air Temperature Sensor

Just to name a few.

Sep 03, 2009 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

2006 Screamin Eagle Fat Boy- tach, speedo, blinkers not working


You've blown a fuse, check the fuse block. it should be an accessory fuse.

Apr 13, 2009 | Harley Davidson FLSTF - FLSTFI Fat Boy...

1 Answer

Exhaust interchangeable


I think so as long as the engine size is the same. I'm not sure that Evo pipes will fit onto a TwinCam. I bought a pair of Screaming Eagle Slash Cut and they bolted right up no problem. Easy instal

Nov 20, 2008 | 2005 Harley Davidson FLSTF - FLSTFI Fat...

1 Answer

Exhaust interchangeable


I think so as long as the engine size is the same. I'm not sure that Evo pipes will fit onto a TwinCam. I bought a pair of Screaming Eagle Slash Cut and they bolted right up no problem. Easy instal

Nov 10, 2008 | Harley Davidson FLSTF - FLSTFI Fat Boy...

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