Name that Knocking (with video) - SV650.org

04-02-07, 05:51 PM

Ok. So I finally got around to recording the sound made from my engine around the right side stator. Linked are three videos. 2000 Nekkid. 19k miles.The sound almost seems like a plastic knock, and it does increase with the revs. She has never run dry of oil, never done wheelies, and never been on her side. I took her to a garage, and they said not to worry about the noise. (they took the clutch apart and found nothing)

Anyone know what pre-ignition sounds like?

http://students.umw.edu/~lmccl1pb/SV...or%20cover.AVI [vid one]

http://students.umw.edu/~lmccl1pb/SV...ght%20side.AVI [Vid two]

(Give them time to download once you click on them.)

*I could not get the third vid to upload, its just the left side. And I will tell just you that the knocking is not coming from that side.

04-02-07, 06:53 PM

cant hear anything id be worried about

04-02-07, 08:32 PM

have you tryed listening through a screwdriver to the engine??

04-02-07, 08:38 PM

how long you had the bike for? sounds normal to me

now my thou that makes some weird noises

04-02-07, 09:18 PM

I've tried the screw driver to the engine. I feel its origonating from above the left side of the transmission. My only concern was the sudden onset of noises. One day it was crystal clear, the next day im getting this plastic knock noise.

On another note, I do feel light pusling in gears 1-3 when maintaining constand speed. How normal is that?

embee · 04-02-07, 10:06 PM

That's definitely nothing to do with combustion issues (pre-ignition, knock/pinking etc).

It does sound a bit uneven and "knockety" from those clips.

I presume it's OK on oil (well you have to ask don't you?

)

I'd be inclined to check the throttle balance for a start. It seems to sound better as it's revved up to me, if the balance is out for some reason you'll get all sorts of rattly knocks from the transmission (clutch is right there behind that side cover).

04-02-07, 11:32 PM

The garage said they balenced the carbs, which i am am pretty sure is the same as the throttle bodies, right?

I'll hook up my balencer just to check though. Everyone always jumps on unbalanced carbs as the reason for problems.

I think it only sounds better reved up because the engine is drowning out the knocking.

04-02-07, 05:51 PM	#1
Torn-Thorax Guest Posts: n/a	Name that Knocking (with video) Ok. So I finally got around to recording the sound made from my engine around the right side stator. Linked are three videos. 2000 Nekkid. 19k miles.The sound almost seems like a plastic knock, and it does increase with the revs. She has never run dry of oil, never done wheelies, and never been on her side. I took her to a garage, and they said not to worry about the noise. (they took the clutch apart and found nothing) Anyone know what pre-ignition sounds like? http://students.umw.edu/~lmccl1pb/SV...or%20cover.AVI [vid one] http://students.umw.edu/~lmccl1pb/SV...ght%20side.AVI [Vid two] (Give them time to download once you click on them.) *I could not get the third vid to upload, its just the left side. And I will tell just you that the knocking is not coming from that side.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Knocking	Phaelok	Bikes - Talk & Issues	6	28-12-08 05:51 PM
knocking noise	thedon1000	SV Talk, Tuning & Tweaking	22	13-10-08 08:27 PM
knocking???	guzz316	SV Talk, Tuning & Tweaking	9	18-09-08 12:51 PM
Knocking over bumps	AndyBrad	SV Talk, Tuning & Tweaking	12	02-09-08 01:56 PM
Need help! Bikes knocking somewhere?	Rickstar	SV Talk, Tuning & Tweaking	11	29-06-08 07:07 PM

04-02-07, 06:53 PM	#2
socommk23 Guest Posts: n/a	cant hear anything id be worried about

04-02-07, 08:32 PM	#3
wyntrblue Guest Posts: n/a	have you tryed listening through a screwdriver to the engine??

04-02-07, 08:38 PM	#4
kwak zzr Guest Posts: n/a	how long you had the bike for? sounds normal to me now my thou that makes some weird noises

04-02-07, 09:18 PM	#5
Torn-Thorax Guest Posts: n/a	I've tried the screw driver to the engine. I feel its origonating from above the left side of the transmission. My only concern was the sudden onset of noises. One day it was crystal clear, the next day im getting this plastic knock noise. On another note, I do feel light pusling in gears 1-3 when maintaining constand speed. How normal is that?

04-02-07, 10:06 PM	#6
embee Member Mega Poster Join Date: Jul 2003 Location: Warwickshire Posts: 2,802	That's definitely nothing to do with combustion issues (pre-ignition, knock/pinking etc). It does sound a bit uneven and "knockety" from those clips. I presume it's OK on oil (well you have to ask don't you? ) I'd be inclined to check the throttle balance for a start. It seems to sound better as it's revved up to me, if the balance is out for some reason you'll get all sorts of rattly knocks from the transmission (clutch is right there behind that side cover).

04-02-07, 11:32 PM	#7
Torn-Thorax Guest Posts: n/a	The garage said they balenced the carbs, which i am am pretty sure is the same as the throttle bodies, right? I'll hook up my balencer just to check though. Everyone always jumps on unbalanced carbs as the reason for problems. I think it only sounds better reved up because the engine is drowning out the knocking.