Question about Harley Davidson FLHRCI Road King Classic Motorcycles

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Cylinder is not firing on a road king - FLHRCI Road King Classic Harley Davidson Motorcycles

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Hi Anonymous, 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...

Posted on May 20, 2015

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SOURCE: I have a 99 road king flhr that sat for about a

Perform a compression test on both cylinders. If there is a significant difference between the two you may have a stuck ring or stuck valve from sitting.

Posted on Oct 01, 2012

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1 Answer

Coil not firing on one side harley road king


Hi Anonymous, on twin cams make sure both spark plugs are in heads and use a grounded third plug to check for spark or hold spark plug cable close to spark plug in head. If still not getting spark the usual suspects are:
1. Fouled spark plugs.
2. Battery voltage below 8.7 volts, loose or broken battery cables especially ground cable to frame.
3. Loose connection at ignition coil or plug between ignition sensor and module.
4. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
5. Faulty ignition coil or ignition / electronic module
6. Failed CKP, CMP, MAP or BAS sensor.
7. Faulty ignition switch.
Good luck

Feb 02, 2014 | Harley Davidson Motorcycles

1 Answer

My 1996 road king will crank but not fire at times. getting gas and spark.


A spark plug may fire when out of the cylinder, but not fire properly when under compression. Replace the plugs and get your coils checked out for correct resistance and operation. You will find the correct readings in your manual.

Sep 11, 2013 | Motorcycles

1 Answer

I have a 99 road king flhr that sat for about a year outside. I changed plugs an oil an was running rich an wouldn't idle at low rpm. Clean out the carb an jets an now rear cylinder isn't firing...


Perform a compression test on both cylinders. If there is a significant difference between the two you may have a stuck ring or stuck valve from sitting.

Oct 01, 2012 | Motorcycles

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

How to change rear master cylinder 2005 road king custom


Hi Jim, for more information on your question please visit the websites below and good luck:
Harley Davidson Rear Master Cylinder Repair replace

Jun 10, 2011 | 2005 Harley Davidson FLHRS - FLHRSI 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

2 Answers

On my pipes one side is hot and the other is cold


Check the pipe right where they come out of the heads. It depends on what type of exhaust system you have on your Road King. If the stock exhaust is on the bike, the rear cylinder exhaust is directed to both mufflers. With the exhaust from the front and part of the exhaust from the rear cylinders going to the right side muffler, it gets more exhaust than the left side and runs hotter. Like I said, check the temp of the exhaust pipes at the cylinder heads. If one of them is cold, that cylinder is not firing. As long as both of the pipes are hot there, you're fine. Just ride the bike and have fun.

Ride Safe.
Stevev

Apr 09, 2011 | 2000 Harley Davidson FLHR-FLHRI Road king

1 Answer

Front cylinder not firing. high ignition coil or shorted EFI. how to know which it is.


What are the DTcs??


disconnect the fuel injectors to see it this stops the code from setting


Test the coil

May 16, 2010 | 2006 Harley Davidson FLHR Road king

1 Answer

2001 fuel injected Roadking idles too slow when hot


By design, as engine gets "too" hot idle goes down and firing of rear cylinder is skipped every second or third cycle.

May 28, 2009 | 2001 Harley Davidson FLHR - FLHRCI Road...

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