Tinging noise at mid RPM Help

I have noticed a noise when accelerating from lower rpm. Don't have a tach on my RK but would guess in the range of 2,000 rpm. Almost like its 3 tinging noises (not sure how else to describe it). But its a quick 3 noises and once rpm get a bit higher don't hear it again??? Not an expert by any mean but seems like would be coming from trany??? Any help would be much appreciated!

It isnt preigniton is it? try some octane booster with your gas and see if it improves, it is very hard to describe the sound over the internet so if you know what preignition sounds like and that noise isnt it, disregard what I wrote, Todd

The more I think about this the more I think it is preignition, it happens just like you are describing it, It can eaither be overly lean or the ignition timing is to far advanced, Is the noise worse when the bike is hot? What mods have been done, stage 1? is it carbed or fuelie and if a fuelie has it been tuned on a dyno?

OK after reading your other post under the efi and map forum I am about 99.9 percent sure your problem is with your fuel management, You are to lean and your true duals make it even harder to tune, dont get me wrong I love true duals and I have them on my bike, but, it makes it a bitch to tune, I would seriously look into a thundermax if you are set on keeping your true duals, it is probably the best thing I put on my bike and I love it, Todd

Thank You

Thanks much for the help Duke! What are some noticeable ways to know for sure if the bike is running too lean. I have checked plugs, look just fine. However it seems like my bike runs a bit rough at idle compared to other bikes I ride with? I am having a heck of a time with the FuelPak as you read in the other post. I hate to just can it since I just bought it last fall and have only put about 5k on bike since then. Do you happen to have some experience in tuning a fuel managment pak?? Im not sure what each code means exactly, Im have just been going with any help Fuel Pak gives me (which is not much) actually starting to piss me off to put it lightly. I have got plenty of upgrades and am not sure if I have even been able to see 'just' what it can do! Once again thank you for your input!!

Thanks Man

As for fuel, I have had plenty of arguments with friends and others with just what fuel to run through the bike. Is a person better off to run say 87 w/ less if any Ethanol and then add some octane booster at each fuel up, or to put in say 93 where possible at the pump??? Thanks again for the help!

Duke

A quick question for you. How bad is preignition if at all? Im sure worse mileage? I cannot honestly say I know what preignition sounds like.

It sounds kinda like shaking marbles in a tin can...also called spark knock.

preignition can burn a hole in your piston in short order if continuous for long enough, I am not sure how the fuel pak works but if you can, give it more fuel in the low end, my cobra had 3 dials on it , I would try givivng more fuel in the bottom pot (green on my cobra) and see if thst helps, otherwise like I said the true duals will make adjusting that a bitch because your fuel management just cant handle adjusting both cylinders individually, You would be better off with a thundermax or sert or pc3 but with the sert or pc 3 you would also have to have it tuned by a dyno operator, Todd

How many miles are on the motor & what year is it?

Had my previous bike do that,it was detonation,Had to much compression for the type of fuel i was using which believe it or not was 91 octane but with Ethenol.After i change to 91 with NO ethenol everything was fine.With lots of previous ecperience with carbs and fuel injected sled motors i found that Ethenol will lean you out approx 1 and 1/2 main jet sizes so if you fun that fuel you need to jet up.Now if you have a FUEL INJECTED motorthere really is little you can do other than remap,add octane boost(not always a fix) or retard the timing a few degrees till it stops but that retard will lose you a little power but will save your motor.If you are running pipes and A/C or other mods (your already on the edge)and you add Ethenol to the mix then that will cause detonation in the cylinder and eventually you will have a hole in your piston among other things! Try a non eth fuel and test then do the remap with more fuel at that stage,if its still pinging then cheak for air leaks around the motor and finally adjust timing if all else fails.Good luck

The bike is an 04 with 26k. Motor work was all done when new.

May not help....I had sound that sounded near the same.....sprayed some WD-40 where the pipes attach to the jugs while idling....if it effects it or kill the motor you have a leak and need to change the seals around the pipes......happened to me and made a noice and ran hot....Maybe or maybe not.....hope that helps...good luck