20 Most Recent 2008 Harley Davidson FLHRC Road King Classic Questions & Answers


I, also, have a 2008 Road King Classic.

Do you get a check engine light when this happens?

On mine, I DO get a light, and it goes into "limp mode", where the power is VERY restricted.

Turns out (in my case) there's a service bulletin about corrosion on the plug connector where the wiring goes into the throttle body.

On mine, I disconnect/reconnect about 3 times, and that seems to remove (by scrapping) the corrosion, and all is good again.
throttle body-l5og2nupkgupea2ube1p3xow-2-0.jpg

2008 Harley... | Answered on May 21, 2019


Hi Fred365, for more information about your question please visit the websites below. Good luck and have nice day.
Harley Davidson Manuals Mark Workshop
Steering Head Bearing Adjustment Harley Davidson Road King

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2008 Harley... | Answered on Jun 28, 2015


Hi Michael_w215, for more information about your question please visit the websites below. Good luck and have nice day.
Harley Davidson Manuals Mark Workshop
Steering Head Bearing Adjustment Harley Davidson Road King

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2008 Harley... | Answered on Jun 28, 2015


Hi Rlloyd845, try pumping air into the rear suspension and spraying windex on all the connections to see where the leak is then repair as necessary by cutting off the very end of line to make for new seat. Good luck and have nice day.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on Jun 28, 2015


Hi Paul, and the usual supects are:
1. Spark plugs are in bad condition, improper gap, partially fouled.
2. Spark plug cables in bad condition.
3. Battery nearly discharged.
4. Loose wire connection at one of the battery terminals especially the negative cable at "BOTH" ends,coil, or plug between the Ignition Sensor and Control Module.
5. Throttle controls not adjusted correctly.
6. Water or dirt in fuel system/tank
7. Water or dirt in carburator.
8. Intake air leak.
9. Fuel tank vent hose and vapor valve plugged, or fuel line closed off, restricking fuel flow.
10. Inrichner valve inoperative.
11. Engine lubricant to heavy (winter operation).
12. Ignition not functioning properly possible faulty CKP, CTS or MAP sensor.
13. Faulty ignition coil.
14. Valves sticking.
For a possible prime suspect please visit the website below. Good luck and have nice day.Harley Diagnostic Codes 04 to Present

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on Jun 28, 2015


Hi Anonymous, the engine oil dipstick on later models unscrews, on earlier models it just pulls out with moderate force, on Softail and Sportster models the dipstick is located on the right hand front side of the oil tank and the Harley Bible says, engine should be at normal operating tempurature, let idle on jiffy stand for two minutes. Shut off engine and hold bike straight up and dipstick all the way in, correct engine oil level will be at the top full mark. Do not overfill oil tank as this will cause engine breathing issues. On Dyna and Touring models The engine oil dipsticks are located on the right front top corner of the transmission and the engine oil pan is underneath the transmission. The engine oil level is checked in the same manner as Softails and Sportsters. If you are having oil carryover or breathing issues (dipstick launch) try running oil level half way between the add and full marks, running the engine at this oil level will not harm normal operation. Good luck and have nice day.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on Jun 27, 2015


Hi Anonymous, for more information about your question please visit the websites below. Good luck and have nice day.
How to Change the Front Brake Pads on Harley Davidson

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2008 Harley... | Answered on Jun 27, 2015


Hi Anonymous, you need to get out your test light and find the short and start by making sure the battery has 12 volts or more and clean tight connections especially the ground cable at both ends. If your issues involves lights always check the bulbs for broken filiments and fuses first. Then start at the socket and work your way towards the handlebar switches checking each wiring harness connector for corroded, broken or loose pins and remember dielectric grease is your friend. Check the switches for continuity and work your way towards the ignition switch and check it for continuity. Keep working your way to the fuses and circuit breaker and finally the battery. For a free wiring diagram please visit the website below. Good luck and have nice day.Harley Davidson Wiring Diagrams and Schematics

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on Jun 26, 2015


Hi Anonymous, 24 oz. of HD Transmission Lubricant. Have nice day.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on Jun 26, 2015


Hi Anonymous, please visit the websites below and good luck:
Stator Repair 3b of 9 Clutch Assembly Removal Tool Listing

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2008 Harley... | Answered on May 16, 2015


Hi Anonymous, please visit the websites below and good luck:
Idle Adjustment for 2007 Road King Harley Davidson Forums

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


Hi Moorewill501, if you have a carburator the usual suspects are:
1. Damaged or restricted fuel tank venting system (gas cap).
2. Inlet system air leak.
3. Vacuum piston malfunction.
4. Accelerator pump leaking or no output.
5. Plugged bowl vent.
6. Fuel level (float chamber) too low.
7. Restriccted fuel supply passages.
8. Plugged jets or passages.
9. Worn or damaged needle or needle jet.
10. Enrichner valve not seated or leaking.
Good luck

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


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:
Harley Diagnostic Codes 04 to Present

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


Hi Anonymous, I'm sorry you can't find the very first and best tool you ever bought for your Harley Davidson. Despair not, for a mere $6.50 you may be able to download another one from the website below and good luck. Harley Davidson Manuals Mark Workshop

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


Hi Ed, 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:
Harley Diagnostic Codes 04 to Present

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


Hi Anonymous, it's your starter drive gone south. I'm sorry you can't find the very first and best tool you ever bought for your Harley Davidson. Despair not, for a mere $6.50 you may be able to download another one from the website below and good luck. Harley Davidson Manuals Mark Workshop

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


Hi Stu, please visit the websites below and good luck:
Harley Diagnostic Codes 04 to Present

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


Hi Anonymous, please visit the websites below and good luck:
Delboy Garage How To replace regular type fork seals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


2008 Harley... | Answered on May 16, 2015


Hi Anonymous, look for gray powder or black soot residue at cylinder head and exhaust system connections. Good luck

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015


Hi Anonymous, always check the bulbs first for broken filaments. Then check the connection at the rear fender wiring harness, inspect for corroded, broken or loose pins. Use a dab of dielectric grease and repair as necessary. Check your brake relay if you have one. For a free wiring diagram please visit the website below and good luck: Harley Davidson Wiring Diagrams and Schematics

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2008 Harley... | Answered on May 16, 2015

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