CBR400 Engine Rattle - video

Wozza · Brolly Dolly Joined: 17 May 2008 Karma :

https://www.youtube.com/watch?v=6UevsUVxQgg

Taken on my phone but it shows the noise quite well. Sounds like a tractor!

Fairly loud rattling noise somewhere on the LHS, seems to be low down, somewhere around where I'm pointing the camera (you can hear the rattle get louder/quieter as I move the phone). Loudest at tickover, changes speed with revs but can't hear it at higher revs.

This is a CBR400 NC23 so there is no cam chain.

Any ideas?

Gareth · Nova Slayer Joined: 03 Nov 2009 Karma :

Hi

Hope am not been stupid have you made sure you have enough engine and transmission oil in. Also dose your bike run ok.

Best Regards

Gareth

dobby · Nitrous Nuisance Joined: 09 Mar 2010 Karma :

i used to have this problem, couldnt find out for love nor money what it was though but didnt ever effect it

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Knowing that these bikes have gear driven cams I'd say any rattling is bad.

I'm thinking big end bearings... Confused

____________________
British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.