2012 Fatboy Pinging

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Nov 24, 2015 | 06:06 AM

jakson200369

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From: Tulsa, OK.

2012 Fatboy Pinging

I have recently developed a problem with engine pinging, seems to occur above 2K rpm's, usually when I am laying into the bike more. I have a 2012 Fatboy, approximately 18K on the bike, have only installed the Screamin Eagle slip on mufflers. I did recently change the plugs, went with NGK Iridium plugs, I think the first set was a Prt# DCPR7EIX. Mentioned my pinging issue to a friend and they suggested running a colder plug NGK Prt# DCPR8EIX.

I still here some pinging issues, might be closer to 3500 rpm's, if I am casually riding the bike I do not hear anything, but lay into the throttle and I can hear a slight ping.

Any opinions or advice? Besides take it to the dealership.

Thanks in advance.

Nov 24, 2015 | 06:15 AM

HDmikie

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From: Florida

What grade gas do you use? Maybe try 91 or higher.

Nov 24, 2015 | 06:26 AM

jakson200369

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From: Tulsa, OK.

I use the 91 octane, pure gas to, no ethanol, also dump in an occasional half bottle of the Amsoil Octane booster.

Nov 24, 2015 | 06:59 AM

HDmikie

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From: Florida

Hmmm, next thing would be a colder plug.

Nov 24, 2015 | 07:00 AM

Misbehaven

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From: Sheboygan,Wi

Have you tried using the stock plugs. On stock motors most after market gimmick spark plugs are useless and can affect you knock sensor.

Nov 25, 2015 | 06:19 PM

the blob

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When I had an efi bike, the only way I could get rid of the pinging was to retard the timing on my master tune programmer.

Nov 25, 2015 | 06:40 PM

Jackie Paper

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From: Honah Lee

Put the correct Harley plug in since it uses the resistance on it to set proper timing. If you read the manual, it says no substitutions. That actually means what is show is required and there is no heat range substitution made. Modern FI ECM controlled engines are that way. Be sure to drop to the appropriate gear if you are really getting into the throttle. Most Harleys are under square long stroke. So give it time to catch up on the throttle or gear it down. I run NGK in mine but I drive easy and only use them since they are handy. They are twice the resistance as their look alike Harley plug. Unless your bike came with Iridium plug, you do not need them. Regular plug will last forever and probably should be replace every 10K anyway.

Last edited by Jackie Paper; Sep 14, 2018 at 11:11 AM.