| Author |
Message |
    
Jhanz
| | Posted on Tuesday, May 30, 2006 - 09:29 pm: | 
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Any thoughts on a loud chirping noise that is very noticeable when accelerating on my 06XB9SX? Fuel pump? Oil pump? Normal? Let me be clear that it is loud. I am bringing bike in tomorrow for 1000 mile service and would like to get some feedback here before I mention it to the service dept. Thanks! |
Blake
| | Posted on Wednesday, May 31, 2006 - 12:33 am: |
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I doubt it would be the fuel or oil pumps.
Might check rear wheel bearings, tensioner pully/bearings. Check drive belt for abnormal wear or signs of rubbing or damage or debris. Check rear tire for proper sizing and surrounding parts for signs of rubbing. Check isolators (two rear, one front). |
Jhanz
| | Posted on Wednesday, May 31, 2006 - 08:43 am: |
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Blake, thanks for the insights. i'm on my way to drop the bike off for 1st service, hopefully it can be diagnosed and addressed. |
Alessio66xb12r
| | Posted on Wednesday, May 31, 2006 - 12:41 pm: |
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the fuel pump noise does'nt change because of rpms accelerate or decelerate.its always the same and after a while must stop his noise |
Blake
| | Posted on Wednesday, May 31, 2006 - 05:57 pm: |
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You are welcome J. Please be sure to check back in here and let us know what you find.  |
José_quiñones
| | Posted on Thursday, June 01, 2006 - 07:22 am: |
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I think you're hearing an exhaust leak as you accelerate, check the header pipes at the heads, you might have a loose/missing exhaust header nut. |
Blake
| | Posted on Friday, June 02, 2006 - 12:27 pm: |
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Excellent call JQ! I agree! |
Sarodude
| | Posted on Friday, June 02, 2006 - 03:13 pm: |
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On one of our bikes, this chirp only happens with the drive engaged. That would seem to rule out an exhaust leak - at least in my instance.
-Saro |
Jhanz
| | Posted on Sunday, June 04, 2006 - 11:54 pm: |
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In response to what Sarodude said, the noise only seems to happen when the drive is engaged on my bike as well. I am picking the Bike up tomorrow from service. The service manager said that he thought it was the idler pulley and that it was a normal sound for Buells. I'll have to follow up on this and see if it can be diagnosed. |
Blake
| | Posted on Monday, June 05, 2006 - 10:19 am: |
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Without the drive engaged, the combustion pressure and thus exhaust pressure is greatly diminished.
It ain't normal for the idler pulley to squeak under acceleration. |
Sarodude
| | Posted on Monday, June 05, 2006 - 12:57 pm: |
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Blake-
You have a point WRT combustion pressures - unless one is whacking the throttle open with the drive disengaged. Sure - it's not going to see quite the load of the bike's weight, but in my case (a Blast) there's SO much freakin' flywheel inertia for that single slug....
Being that with me it's happening on a Blast, I wouldn't think that's it's specific to an XB's idler pulley. I don't have one.
Also, it happens with very modest amounts of power - but always with the drive engaged. Whether I'm wide open or maintaining parking lot speeds on level ground - it happens. Can't recall if it happens off throttle. Probably ride it to work tomorrow for further evaluation.
-Saro |
Jhanz
| | Posted on Monday, June 05, 2006 - 03:14 pm: |
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I picked up the bike today from the 1000 mile service. I did notice that the chirping does actually occur when not moving, but it is not as noticeable. The service manager said that it was the idler pulley and that they would order the part and replace it under warranty, no problem. Does the idler pulley sound like a good call? He seemed pretty certain. Otherwise, the bike is like butter and I had Mobil 1 put in the tranny and man, what a big difference...so noticeable. the bike shifts much smoother now. |
Fullpower
| | Posted on Thursday, July 20, 2006 - 12:52 pm: |
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my original idler pulley bearings seized after a couple thousand miles. very easy to replace them. takes a pair of 6203 sealed bearings. common, easy to find. look for an auto electric rebuilder in the yellow pages. they will stock bearings for that application. expect to pay around 6 or 8 bucks each. DO NOT ACCEPT chinese bearings. |
Jhanz
| | Posted on Tuesday, December 19, 2006 - 12:01 pm: |
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Just for the record, the chirping noise was a bad front header gasket. |
Reepicheep
| | Posted on Tuesday, December 19, 2006 - 12:30 pm: |
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Thanks for the followup, that's a great piece of data to know! |
Glitch
| | Posted on Friday, March 19, 2010 - 04:23 pm: |
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I had the same noise.
Very loud when cold, sounded like a bad belt on an old car.
Fortunately I search the KV for "idle pulley bearings" here in the KV.
Sure saved a lot of trouble, cause it turned out to be the front header gasket as well. |
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Chirping Noise When Accelerating (06 XB9SX)