Ducati Monster Forum

Moto Board => Tech => Topic started by: masonarypp on May 26, 2018, 03:54:22 AM

Title: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: masonarypp on May 26, 2018, 03:54:22 AM
Hi there,

My Ducati Monster 620 engine makes a weird sound, i dont know how to call it.. so lets just call it a 'tickling / scratching sound'.

I tried recording it, check it out in the link below:

https://www.youtube.com/watch?v=ze5r53DyuBs&feature=youtu.be

When in neutral (like in the video) it's hard to hear it. However when i ride 60+ mph, you hear it pretty well.

Two things come to my attention:

Would love to hear your thoughts on this! I drove a other 620 before this and it souds 'new' to me..
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: stopintime on May 26, 2018, 04:15:42 AM
Not easy to hear from the video, but I think you'll have answers when you remove the clutch cover.
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: koko64 on May 26, 2018, 04:28:09 AM
+1
Stop riding it and investigate.
Drain the oil and examine it and the sump plug.
The noise being eliminated by pulling the clutch is telling you something and hearing it at 60mph is a concern. Is it a late model 620?
Others will chime in, but there are threads on this so a search is worth the effort. There was a clutch type that gave trouble with some models and some members here have experience with it.
That's a very noisy wet clutch and gives my M900 dry clutch a run for its money.
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: Howie on May 26, 2018, 06:05:58 AM
Quote from: koko64 on May 26, 2018, 04:28:09 AM
+1
Stop riding it and investigate.
Drain the oil and examine it and the sump plug.
The noise being eliminated by pulling the clutch is telling you something and hearing it at 60mph is a concern. Is it a late model 620?
Others will chime in, but there are threads on this so a search is worth the effort. There was a clutch type that gave trouble with some models and some members here have experience with it.
That's a very noisy wet clutch and gives my M900 dry clutch a run for its money.

Absolutely!!!!

Can't tell anything decisive from the video, but I have a feeling the crank kinda banging around.  I would start with removing both side covers and looking for play.  Also check the flywheel nut.
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: masonarypp on May 27, 2018, 04:08:37 AM
Quote from: stopintime on May 26, 2018, 04:15:42 AM
Not easy to hear from the video, but I think you'll have answers when you remove the clutch cover.

Thanks for your response. What should i look for?
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: masonarypp on May 27, 2018, 04:30:54 AM
Quote from: koko64 on May 26, 2018, 04:28:09 AM
+1
Stop riding it and investigate.
Drain the oil and examine it and the sump plug.
The noise being eliminated by pulling the clutch is telling you something and hearing it at 60mph is a concern. Is it a late model 620?
Others will chime in, but there are threads on this so a search is worth the effort. There was a clutch type that gave trouble with some models and some members here have experience with it.
That's a very noisy wet clutch and gives my M900 dry clutch a run for its money.

Thanks for your response!

It's a 2003 model. I agree, it's very noisy for a wet clutch. I drove two different kind of 620s before and havent really heard it like this before.
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: stopintime on May 27, 2018, 04:39:51 AM
Quote from: masonarypp on May 27, 2018, 04:08:37 AM
Thanks for your response. What should i look for?

Metal parts  :-\

These clutches have weak primary drive and driven gears. Happens too often that they break. It could be something else, I don't know. Open the side covers first and see what you can find, or not, and go from there - internally maybe  >:(

It might help us help you if you take and learn to post pictures. (you need a hosting service or similar - then link them here)
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: masonarypp on May 27, 2018, 05:23:37 AM
Quote from: stopintime on May 27, 2018, 04:39:51 AM
Metal parts  :-\

These clutches have weak primary drive and driven gears. Happens too often that they break. It could be something else, I don't know. Open the side covers first and see what you can find, or not, and go from there - internally maybe  >:(

It might help us help you if you take and learn to post pictures. (you need a hosting service or similar - then link them here)

Cool. I'll look into it. Do i need to replace my oil when removing clutch cover? Just replaced it 3 weeks ago, so..
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: Howie on May 27, 2018, 05:55:21 AM
If the bike is vertical, as on a lift or a rear stand you will not lose much oil.  If you see metal particles, obviously a change will be needed.
Title: Re: Ducati 620 engine making weird 'tickling/scratch sound', becomes worse when hot
Post by: masonarypp on May 28, 2018, 02:09:52 AM
Thanks!

I also found http://www.ducatimonster.org/forums/tech/178248-wet-clutch-motor-dry-clutch-noise-2.html

I think this is exactly the same problem.