Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


zxr750 engine rattle

 Reply to topic
Bike Chat Forums Index -> The Workshop
View previous topic : View next topic  
Author Message

wizzzard
World Chat Champion



Joined: 29 Mar 2008
Karma :
PostPosted: 01:52 - 05 Dec 2008    Post subject: zxr750 engine rattle Reply with quote
I have a very noisy rattling sound coming from the engine of my 91 kawasaki zxr750.

The rattling is there at tick over and when decelerating but disappears with positive throttle and constant throttle.

Would i be correct in guessing with my limited mechanical knowledge that its the cam chain to blame and if so how easy a home repair is it?
____________________
And did you exchange a walk on part in the war for a lead role in a cage?
Zeitgeist / Addendum / Moving forward
 Back to top
View user's profile Send private message You must be logged in to rate posts

rotax81
Nearly there...



Joined: 10 Sep 2008
Karma :
PostPosted: 06:50 - 05 Dec 2008    Post subject: Reply with quote
on tick over pull the clutch in to see if it still rattles. this elimimates the motor or the gearbox.
if it still rattles with the clutch in then it depends on the rattle sound.
____________________
ZX636C6F road. ZX636C1H track. ZX7R redundant. ZX0.5R minimoto as ornament.
Audi A4 Avant 1.9TDi and VW Transporter 2.5TDi 888 Special (no mot and tax lol)
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

NiteMare
Spanner Monkey



Joined: 12 Sep 2008
Karma :
PostPosted: 13:23 - 05 Dec 2008    Post subject: Reply with quote
rotax81 wrote:
on tick over pull the clutch in to see if it still rattles. this elimimates the motor or the gearbox.
if it still rattles with the clutch in then it depends on the rattle sound.


this rattle is often just carbs out of balance aggravating the normal "primary" rattle of many bikes, it eliminates very little...

a decelleration rattle sometimes indicates worn little ends, but not "too" likely on a modern bike (it'll be a bastard if it is)....

it "could" be your camchain tensioner stuck/requiring adjustment but i've not worked on a kwak for a couple of decades so have no idea of the complexity of the job...

folks are really going to have to listen to your bike to assess where/what the noise is, i have no idea as to suggestions over the internet
____________________
it ain't broke...

i ain't fixed it enough
 Back to top
View user's profile Send private message You must be logged in to rate posts

Barry_M2
World Chat Champion



Joined: 09 Sep 2004
Karma :
PostPosted: 16:09 - 05 Dec 2008    Post subject: Reply with quote
On the ZXR, top ends are noisy. But, from what you describe, it sounds like the cam chain tensioner needs adjusting, or better replacing.

Carb balance out of sync on a ZXR will not make it sound any different, not with CV carbs fitted anyway.

I'd go with Rotax with it either being clutch rattle or tensioner. Thumbs Up
____________________
ZXR750R (M2) - For the road.
CBR1000 RR4 - For the track.
https://www.bikechatforums.com/profile.php?mode=viewprofile&u=4332
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts
Old Thread Alert!

The last post was made 17 years, 329 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT + 1 Hour
Page 1 of 1

 
 You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.13 Sec - Server Load: 1.37 - MySQL Queries: 13 - Page Size: 40.93 Kb