Question about 2009 Harley Davidson FLHR Road King

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Pings when hot 3500rpm

After running in town freeway 3500 rpm shifting pings

Posted by Anonymous on


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Hi Anonymous, start by switching to high octane premium fuel, Chevron, Mobil, Shell, ect. ethanol is not a friend of your engine. Use only Harley Davidson 20w50 Syn 3 oil. Install an oil cooler, engine oil temperature should be 180 to 220 degrees. Usual suspects for pinging are as follows:
1. Fuel octane rating to low.
2. Faulty spark plugs.
3. Incorrect spark plug for the type of service.
4. Excessive carbon deposit on head or in combustion chamber.
5. Ignition timing advanced due to faulty sensor inputs (MAP, CKP, CMP).
For a possible prime suspect please visit website below:
Harley Trouble Codes
Good luck

Posted on May 02, 2015


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Have a 2004 hd sporster roadster carb rejet kn filter python mufflers bike pings at high rpm around 3500-4500 other than that it runs great what could cause this ty

Hi, Michael to avoid premature engine wear and damage this condition should be eliminated "ASAP" and the usual suspects are:
1. Fuel octane rating too low.
2. Compression too high due to excessive carbon deposit buildup on top of the piston, top of the cylinder bore, and cylinder head dome.
3. Engine overheating due to lack of lubrication, coolant, or lack of cool air passing by top end cooling fins due to accessories or bike not moving.
4. Engine under heavy load due to riding double overweight luggage etc.
5. Fuel-air mixture too lean or too rich.
6. Outside air temperature too hot for the load (dessert).
7. Faulty knock sensor.
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9. Points plate too far advanced or mechanical advance mechanism worn out.
10. Blocked exhaust causing excessive backpressure.
11. Incorrect spark plugs for the kind of service causing overheated tip.
For more information about your issue and valuable "FREE" downloads that you will need please visit the websites below, and for specific information or questions, please feel free to contact me at Good luck and have a nice day.
Harley Davidson Manuals Mark Workshop
Owner Manuals Harley Davidson USA $ 6 a month cheap

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