| Author |
Message |
    
Blaststunter
| | Posted on Sunday, June 24, 2007 - 02:54 am: | 
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i bought a 2003 xb9s about a month ago and since i got it its had a funny pinging sound and its making me worry i took it to the dealer and he said it was the primary sprocket nut was loose so i checked it and the thing wont move so its not that anyone have an idea wut it could be??? |
Reepicheep
| | Posted on Sunday, June 24, 2007 - 09:58 am: |
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Checked what? He probably meant the crank nut that secures your stator cup that is inside your chain driven pimary assembly under the primary cover (left side of the bike, not right).
Is it like a ringing sound? And does it go away when you lightly drag the clutch (at a stop with the brakes on)? If so, it's that nut. Fix it soon, if you get in there early you just pull the nut, clean the threads, put on loktite red, torque to the new updated torque specs, put back together and ride. If you wait, those splines on the crank can get chewed up, and you have to split the cases. |
Blaststunter
| | Posted on Wednesday, June 27, 2007 - 09:28 pm: |
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no its a tink sound and its coming from the front part of the primary cover and he said that it was the primary sprocket compensator nut and he said if i can put a wrench on it and spin it its loose so i went home and took the cover off and could not get it to budge so i torqued to 250 ftlb like he told me too put it all back together put fluids in it started it up and the same problem so i have no clue wut to do and its my only transportation to work |
Bad_karma
| | Posted on Wednesday, June 27, 2007 - 11:53 pm: |
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Zak
Don't think this is it but have you checked your primary chain adjustment?
Does the noise vary with engine speed? Check for loose fasteners on exhaust and other items in the area?
Joe |
Blake
| | Posted on Thursday, June 28, 2007 - 02:40 pm: |
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Your dealership gave you bad information. The sprocket shaft nut won't necessarily spin loose as that nut is installed with liberal amount of red loctite which prevent it from doing so.
In order to properly torque that nut it first needs to be completely removed and have all the threads cleaned on nut and sprocket shaft; then apply red loctite and tighten/torque as specified. |
Blaststunter
| | Posted on Thursday, June 28, 2007 - 09:10 pm: |
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yes if i rev the bike the pinging speeds up also and yes i checked the chain adjustment and its fine and as for the nut i had my girlfriend who was helping me work on it hold my bike while i had the wrench on and threw my wight into it could not get it to move, the dealer is booked till the 18th and i need this fixed as soon as possible |
Sparky
| | Posted on Friday, June 29, 2007 - 02:45 am: |
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When you drained the oil out of the primary to get at the engine sprocket nut, was there any kind of metal debris in the oil or on the bottom of the primary? Any at all?
Things that could go wrong in there are a worn, loose or broken primary chain adjuster or a magnet that came unbonded from the rotor and it's rattling around in there.
Did the primary chain adjuster shoe have any grooves worn in it? Grooves are OK but the max allowable depth ranges from 0.040" on the outer ones to 0.0625" on the inner ones. If it's really worn through the plastic shoe to the metal backing plate, there could be chain-to-adjuster metallic noise coming from the bottom of the primary cover midway between the engine sprocket and clutch sprocket.
Ya know, if you are not sure exactly where the noise is coming from, you can use a mechanic's stethoscope to determine what part of the engine is making the noise. Or a large screwdriver held with the handle on the ear and the the pointy end on various parts of the engine will work too.
Or maybe the "pinging" sound you are hearing is actually the engine pinging as in not running high octane fuel? |
Blaststunter
| | Posted on Friday, June 29, 2007 - 08:23 pm: |
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there was a very little bit of metal shavings on the drain plug and the adjuster shoe had grooves but very slight and i know its not the fuel cuz im running octane booster so its good lol but hopefully the dealer can figure it out when i take it there if i dont find out wut it is |
Bad_karma
| | Posted on Friday, June 29, 2007 - 11:19 pm: |
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Zak
Is octane buster O2 safe?
Joe |
Blaststunter
| | Posted on Sunday, July 01, 2007 - 07:34 pm: |
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yes i double checked to make sure it was o2 safe |
Sparky
| | Posted on Sunday, July 01, 2007 - 11:42 pm: |
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You assume the fuel is OK because you used octane booster? It's not OK if one, for instance, puts in 87 octane, notices the engine pinging, then puts in octane booster. You didn't do that, did you?
Well, if you did, no problem, that's easy to fix. Just run 91 or greater octane fuel without octane booster. That's important because there could be an intake manifold leak which would make a cylinder run lean and show the problem as pinging. Using octane booster in this situation might hide the symptom and make the problem harder to identify.
So, when it makes this noise, is the engine under any kind of load or does it do it all the time: on the sidestand idling, cruising or revving under load? |
Blaststunter
| | Posted on Wednesday, July 04, 2007 - 03:19 pm: |
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i always run 91 octane but i talked to another buell rider and he told me to use the booster but its been pinging since i got it the buell tech said it has something to do with the primary |
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03 xb9s pinging