Question about 2002 Harley Davidson FLHR - FLHRCI Road king

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02 road king fuel problems have a half tank of fuel starts misfires and back fires though exhaust and starts hard

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  • paulmahoney Mar 17, 2011

    found problem had hole in plastic tube in tank thanks you for helping

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  • Master
  • 4,565 Answers

If you have a carb equipped bike and the bike has been lowered in the rear, you could be running out of gas on your main fuel switch position. You may have to go to reserve at that point. If the petcock is located at the front of the tank, the fuel is more to the back end of the tanks if the rear end of the bike has been lower. If it's fuel injected, I have no idea.

Good Luck
Steve

Posted on Mar 16, 2011

  • 1 more comment 
  • wd4ity
    wd4ity Mar 17, 2011

    I'm glad to hear you found your problem. I'm sorry I could not have been of more help but I don't do fuel injection. I'm an old old school biker and I have no interest in trying to learn the fuel injection and electronics on the newer bikes. I work on the stuff that the dealerships won't work on anymore, the old shovelheads, panheads, and ironhead sportys. There's still enough of those out there to keep me busy. Good Luck and ride safe.
    Steve

  • paulmahoney Mar 17, 2011

    so im i this is all new give me old school is better

  • wd4ity
    wd4ity Mar 17, 2011

    Agreed, that's why my daily rider is a '94 FXDWG. Even with it's few faults, I'll take the Evo engine any day of the week. Shovelheads and Panheads are a headache but they'll run when the rest won't. I've also got a 1969 FLH Pan/Shovel and a 1965 FL ElectraGlide. 90% original

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1 Answer

Bad misfire


run the fault codes as misfire can be from injectors , low fuel pressure and ignition problems
all temp gauges will show a rise on stopping an engine as there is still residual heat in the block and heads with no water circulation and cooling
the fire from the exhaust indicates an exhaust valve is not closing properly so a compression test would be in order to check for valve problems or hydraulic follower problems

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2003 annv. roadking...starts and runs fine with a full tank of gas...when it gets to half a tank its hard to start and stalls at stops.


If this is the model with a fuel tap you in tank filter is blocked. If you have the injected model you fuel level switch is faulty

Sep 04, 2014 | 2003 Harley Davidson FLHRCI Road King...

1 Answer

Harley troubleshooting


Engine Runs but Misfires
1. Fouled or improperly gapped spark plugs.
2. Damaged spark plug cables.
3. Incorrect ignition timing.
4. Defective ignition components.
5. An obstructed fuel line or fuel shutoff valve
(carbureted models).
6. Obstructed fuel filter.
7. Clogged carburetor jets.
8. Malfunctioning fuel pump (fuel injected models).
9. Loose battery connection.
10. Wiring or connector damage.
11. Water or other contaminates in the fuel.
12. Weak or damaged valve springs.
13. Incorrect camshaft/valve timing.
14. A damaged valve(s).

Jul 11, 2014 | 2002 Harley Davidson FLHRCI Road King...

1 Answer

2001 road king is only firing on back cylinder. replaced plugs and coil still the same, what is next?


Hi Advantagecol, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals,
ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust vale.
For a prime suspect please visit website below and good luck:
Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

Aug 23, 2012 | 2001 Harley Davidson FLHR - FLHRCI Road...

1 Answer

Need to fix lean misfire on 02 fuel injected


Hi Lance, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals,
ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust vale.
For a prime suspect please visit website below and good luck:
Big Twin Carb EFI DTC Intructions codes Harley Davidson Forums Harley...

May 26, 2012 | 2002 Harley Davidson FLHR - FLHRCI Road...

1 Answer

I have a 95 Road King that isn't running right, it


Backfiring out of the exhaust is usually an ignition problem. Unburned fuel is getting into the exhaust system because it's not being ignited in the cylinder. When the engine fires on that cylinder again, it ignites the raw fuel in the exhaust causing the pop that people call a backfire. I'd investigate the ignition system. Connect a timing light to each of the spark plug wires if it has a single fire ignition or either of them if the ignition system is the stock dual fire. Start the engine and watch the timing light to tell if the engine is missing as the light will miss a flash.

Good Luck
Steve

Jun 05, 2011 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

2000 harley road king will not start,new battery,drained and refill fuel tank,engine light comes on for 4 seconds and hear fuel pump run, cranks over good but no start,has not run for 2 years.


Hi, i would work from here. Check the spark plugs, the plug wires, and the coil. Those hardly go bad, so it's possible that something is not allowing the coil to fire.

May 07, 2011 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

2002 roadking misses


Here is a list of things you can start with:

1. Spark plugs in poor condition or partially fouled.
2. Spark plug cables in poor condition and shorting or leaking.
3. Spark plug gap too close or too wide.
4. Faulty ignition coil, ECM, or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connection at battery terminals,
ignition coil or ECM connector.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system.
9. Fuel tank vent system plugged.
10. Air leak at intake manifold or air cleaner.
11. Loose or dirty ECM connector.
12. Faulty Sensor(s): Manifold Absolute Pressure (MAP),
Crank Position (CKP) or Oxygen (O2).
13. Incorrect valve timing.
14. Weak or broken valve springs.
15. Damaged intake or exhaust valve.
16. Partially plugged fuel injector(s).

May 31, 2009 | 2002 Harley Davidson FLHRCI Road King...

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