Mother F*&%ing ping!
Bottom line here is that the bike shouldn't do it; neither from stock nor after a stage-1 done properly. If it is doing it then there is a fault and, in my experience, here are the four most likely causes of pinging:
1. Its not pinging at all. Its a loose exhaust component like the head flange bolts or a heatshield clamp. Or else some other loose part like an engine mount.
Just take a spanner to every nut, bolt and screw you can see and check none are loose.
2. Bad fuel. Seems in the US you get some really variable grades of fuel like you do in the remoter parts of Europe.
If you have shopped around though and tried other gas stations then forget this one.
3. A combination of too lean plus too advanced ignition. With a 2010 this seems relatively unlikely as it has a mild advance table (max 28° under load), anti-knock built into the coil and a well-proven ECU using O2 sensors to keep the AFR just the right side of too lean.
If it is this then its a fault from factory with the maps that have been installed or else it could be a faulty O2 (or other) sensor. First port of call should be the dealer. Failing that then you need something like a SEPST that is going to let you inspect the timing and AFR tables along with a auto-tune feature.
4. Leak at the intake manifold.
Squirt unlit butane from a lighter or blow-torch at the manifold while the engine running. If the revs change with the gas on the manifold you have a leak.
Good luck and I hope you track it down!
Last edited by Foxster; May 16, 2010 at 03:06 AM.
IF it is still under warranty (and it certainly ought to be) then make them eat it. You pay enough for the HD, it ought to be pretty much flawless for a lot longer than you have had it.
Good luck. RD
The Best of Harley-Davidson for Lifelong Riders
Now the "solutions" I read about were taking timing out with some sort of tuner along with an A/C and pipes and a good tune. One RK guy did a full teardown and removed all carbon in the engine and in that thread one poster said to vent the breathers to atmo. Some say its "normal". sSome say get colder plugs.... Maybe I'm missing something obvious but im not going to spend $1500 yo maybe fix a problem i shouldnt have in the first place.
I will say that I highly doubt lugging caused this because I broke the bike in with my father riding along and i didnt baby it by any means.
I am already bracing for "search dummy" so it wont offend me lol.
If anyone that has had this problem and actually solved it could ster me in the right direction I would be eternally grateful.


