Question about Harley Davidson FLHTC Electra Glide Classic Motorcycles

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Strange noise in cold HD EVO engine

It has a high pitched buzz or squeal during deceleration when the engine is cold.It sounds like its in the primary front part of the motor

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  • jonboyinsac Dec 08, 2008

    I am having the same problem with my 1998 Heritage softail. It does it first thing when cold but is getting worse. It only does it when the bike is in motion & not when idling or reving up in neutral. This morning, I think I noticed that when I squeeze the clutch lever, it stops. I am going to double check this tonight on my way home. What does everyone think ? Any ideas ?


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  • 7 Answers

I had a similar situation with a Harley once that turned out to be a broken front motor mount.

I do not work on many Harleys, but I was told that it was a fairly common problem with that model.

Maybe that will help, maybe it wont.

Posted on Nov 24, 2008

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Horrible noise started coming from gearbox and noise continues if i pull clutch in and kill motor and free wheel! is this likley to be main gear shaft bearings and if so can it cause more damage

Hi Daddydogg, if it is a high pitch squealing noise it may very well be a bearing failure the best thing to do is not to run it anymore and take it to your local dealer or reputable shop and let them have a listen. You can drain the primary and check the magnetic drain plug for metal ants. For more information about your issue, please visit the websites below, and for specific information or questions please feel free to contact me at Good luck and have a nice day. Harley Davidson Manuals Mark Workshop

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locating a sound is hard especially because you're driving. Most likely a high pitch sound especially when you let off is a vacuum leak, or leak around your airbox. Off the throttle the engine is at maximum vacuum. Look at hoses cracked or not properly pushed in

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Can sombody please help I have a strange sound in my 2007 r1 motor if bike is cold the sound is not there if you floored it the sound is gone but as soon you slacking down the sound is gone as long as

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You may have an issue with the actual gearbox its self.
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