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Engine Knocking Noise - 2004 Honda Vfr800 - Page 2 - Sixth Generation VFR's - VFR Discussion - Page 2

12 posts Started 19 Aug 2013 Last recovered post 31 Aug 2013 Wayback Machine snapshot 1 Nov 2013

#1

At around 36,000KMs the bike has started making this knowing noise at idle. It's a little troubling! It only happens after at idle after a short ride. Starting the engine from cold it doesn't knock, not when throttled. I haven't replaced the plugs yet, so maybe it's a misfiring plug, but I'm leaning towards cam chain tenders and it's probably the front one. BTW: I live in Ajax (GTA), Ontario, Canada... So if anyone in my neck of the woods has had noise and resolved it, I'd definitely like to hear from ya for fixed it locally or doing it myself.

I have a 4 day trip planned at the end of this money, so need to get this taken care of soon. Or I believe I should anyway.

Any comments/suggestions/ideas would be greatly appreciated.

Have a listen:

[video: http://youtube.com/embed/11twWd2jNSs?html5=1&fs=1]


Edited by RodneyBR, 19 August 2013 - 09:38 PM.
#2

oh that sounds bad. hopefully its nothing major.

#3

oh that sounds bad. hopefully its nothing major.

Ok, now you're just scaring me. Hope it's nothing major either!


Edited by RodneyBR, 19 August 2013 - 10:02 PM.
#4

Hard to say but my guess is your front CCT.  Does the knocking increase when you rev the engine?  Does it go away when you pull in the clutch lever?

#5
That sounds really bad. I'd say can chain, cam chain guide, or cam chain tensioner.

Sent from taptalk with spell check and political correctness disabled

#6

As asked does it go away when clutch pulled in, mine makes that noise allot of the time & it is just the clutch nothing to worry about my bike has done it off/on since I have owned it & I thrash the hell out of it. If noise still there when clutch pulled in then very likely cam chain rattle so CCT problem. I would first try the two things that can remove that noise before replacing CCT's.

1. The CCT you need to get a small screw driver & wind back the CCT mech as you would with the special tool you make (drawing of it in service manual) & then just release, this some times resets tension & fixes problem.

2. Replace motor oil, if doesn't fix the problem at least you did an oil change.

#7

As asked does it go away when clutch pulled in, mine makes that noise allot of the time & it is just the clutch nothing to worry about my bike has done it off/on since I have owned it & I thrash the hell out of it. If noise still there when clutch pulled in then very likely cam chain rattle so CCT problem. I would first try the two things that can remove that noise before replacing CCT's.

1. The CCT you need to get a small screw driver & wind back the CCT mech as you would with the special tool you make (drawing of it in service manual) & then just release, this some times resets tension & fixes problem.

2. Replace motor oil, if doesn't fix the problem at least you did an oil change.

Thx. I'll take her out for a short ride today to make that noise happen (doesn't happen when cold) and I'll get back to ya.

#8
Ok, so pulling in clutch doesn't work, still noisy. Gonna try changing the oil and filter.

BTW.. I went to two shops and they both told me it's the CCT. But both said it's nothing major since it goes away once throttled. Replace it, but no major rush.

Sent from my LG-E971 using Tapatalk 4

#9
Ok, so I changed the oil and filter and the knocking seems to have gone away. Fingers crossed.
Edited by RodneyBR, 21 August 2013 - 09:27 PM.
#10

That's cam chain tensioners. I just did mine at 75,000 kilometres. They aren't particularly difficult to do - the top one (front) is a bit trickier but if you're somewhat mechanically inclined it's not bad. Parts are about $200 including washers and gaskets and it takes an afternoon to do. 

Mine sounded like a paint mixer before I replaced them. I could actually hear the cam chain slapping a bit. 

#11

Yup, definitely CCTs by the sound of it.  If the oil change doesn't keep it away, just buy some new CCTs.

#12
Hey Rodney, any luck with the knocking staying away and not rearing its head again?
I've got the same problem myself, can I ask what oil you used?

Thanks
End of thread · 12 posts recovered Wayback Machine snapshot 1 Nov 2013