SuzukiSavage.com - Print Page

SuzukiSavage.com
/cgi-bin/YaBB.pl
General Category >> Rubber Side Down! >> Engine noise
/cgi-bin/YaBB.pl?num=1605372081

Message started by Adellemoto on 11/14/20 at 08:41:20

Title: Engine noise
Post by Adellemoto on 11/14/20 at 08:41:20

Hello all, new member.

2007 model. no mods. fresh oil and gas.
Has a knock in the engine, wondering if anyone can identify.
purchased this bike knowing it had a knock. ($400)
this is the only time I have turned it over. If I rev the engine, the sound goes away. It comes and goes as I rev. So far what I've read here (before I listened to it), it's possible that it's the cam chain tensioner (already placed an order for verslavy) or maybe a loose flywheel nut or maybe something in the top end.

https://youtu.be/aPfyP3Nzo6k

anyone familiar with this sound?

Title: Re: Engine noise
Post by backroadbozo on 11/14/20 at 10:48:56

Hard to tell from the video but it sounds like its coming more from the top end of the engine? A good way to pinpoint where a knock is coming from if you don't have an engine stethoscope is to use a screwdriver and put the handle of it up to your ear and place the metal end of it on various areas of the engine. That will help you get a better idea of where the knock is coming from.

Disclaimer: I've never tried this trick, never had to, but some old timers have told me that they've done it to pinpoint a knock. Worth a try!

Title: Re: Engine noise
Post by Zepp on 11/14/20 at 14:28:46

This sound disturbed me a lot, its more kind of mekanicaly klonking sound, other that Im used to!

My bike sound more like this;
https://www.youtube.com/watch?v=Z2HDQE3Hlpw&ab_channel=StanisaStankovic

There are no exhauste sound in your video at all?

This is a big thumpher, the exhauste sound is the major part of sounds?
In anyway, if one is riding this bike, its the bystanders that have to listen to the exhauste sound, and one only hears the camschaft doing its jobb, and the venturies!

Cant say if its a fault, but it sounds awfull, on your video!
Try anoher video.. outside!

Title: Re: Engine noise
Post by Adellemoto on 11/14/20 at 15:29:56

I'll get another video tomorrow, with and without the motor making the sound. At idle it comes and goes when I rev the engine. I took it for a ride just a few minutes ago and the noise seems to stop all together at higher rmps. I can ride through my neighborhood in 1st and the noise doesn't happen but if I come to a stop or go really slow, I hear it again but I can just rev it away.

Title: Re: Engine noise
Post by Hiko on 11/14/20 at 16:35:39

You dont say how many miles ?
Could be cam chain tensioner is my guess
I would be having a look at that first off

Title: Re: Engine noise
Post by Dave on 11/14/20 at 16:54:50

If the sounds goes away at higher rpm.....you might want to confirm the flywheel nut is tight.

My bike started to have a slight knock with only 600 miles on it - and by the time I got to 1,000 miles the knock was deafening. It was loudest at idle.....while cruising along at 4,000 rpm the sound was gone.

I started tearing things down from the top, and I could not find anything wrong until I got to the flywheel - the nut was finger tight! The noise is the flwheel splines banging on the crankshaft splines. It is hard to isolate the sound as the knock goes into the crank and then through the bearings into the engine block.

Title: Re: Engine noise
Post by Adellemoto on 11/15/20 at 08:49:09

754E4354454952544F474A55260 wrote:

Yeah, I planned on checking that but if I'm doing that I might as well do that lighter flywheel swap as well. I'm gonna go ahead and order the flywheel and then I'll got in touch with you about the tool rental

Title: Re: Engine noise
Post by Adellemoto on 11/15/20 at 08:56:29

Hey Dave, do I get the Armen flywheel from you? and are you still doing the tool rental? If not, could you point me in the right direction?

Title: Re: Engine noise
Post by LANCER on 11/15/20 at 09:58:48

I had a similar situation around 2013/14 with the same type of sounds, hard thumps at idle to low speed but then seemed to disappear when the revs went up. Mine turned out to be some rust on the rings that caused the piston to be yanked into the side of the cylinder when I cranked it after an extended time just sitting.
Yep, that was my fault on that one for not fogging/oiling the cylinder and turning it over by hand first, then without a plug, just to be sure all is well.

I Replaced the piston, and carefully removed the aluminum pressed onto the cylinder wall and then honed it.

Title: Re: Engine noise
Post by Dave on 11/15/20 at 15:32:58

62495348524045444D4D44210 wrote:

Hey Dave, do I get the Armen flywheel from you? and are you still doing the tool rental? If not, could you point me in the right direction?

Yep, I still have some light flywheels in stock.....and it is likely the last of them as Armen doesn't have the equipment to make them anymore.

I also have the rental tools.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1504271719/0

Title: Re: Engine noise
Post by Adellemoto on 11/16/20 at 16:30:14

I shot you an email Dave