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GRN96WS6, Sal_the_man
Most users ever online was 4,519, September 2, 2015 at 03:26 AM.
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  (#1)
100% Kawasaki Biased
 
Thomas's Avatar
 
Posts: 1,522
Join Date: April 18, 2005
Location: Catharpin
May 18, 2005, 10:32 AM

I put the stock muffler on my 99 Zx-6r the other day to get it inspected, shortly after doing so I noticed a ticking that I did not/ could not hear with the after-market pipe. It will tick at any rpm but you must be on the gas at least a little, It does not make any sounds when downshifting regardless of rpm(while slowing down).

I was told that it could be runing lean or need a carb sync, it could be a valve adjustment, or even detonation. Any ideas or advice??

Whatever it turns out to be I would like to do the job my self so if anyone has any experiance with this sort of thing let me know and I will make it worth your while if you want to guide me through it. Thanks for your help.


You can live in your car, but you can't race your house.

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  (#2)
Licensed Rider
 
Posts: 174
Join Date: April 19, 2005
Location: Reston, VA
May 18, 2005, 11:08 AM

I may make myself look dumb here, so someone please correct me if I'm wrong. But I believe anytime you switch your exhaust in a carbed engine, you should rejet. I think it makes less of an impact if it's just a slip on, but still might be worth doing. As for experience, can't help you at this point. I really don't know if this will help your problem, but I thought I'd toss it out there for you.
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  (#3)
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Join Date: September 29, 2002
Location: VA
May 18, 2005, 03:25 PM

I don't know without hearing it myself.


'08 MARRC Expert Racer of the Year
2009 #3 Combined Overall Championship

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  (#4)
100% Kawasaki Biased
 
Thomas's Avatar
 
Posts: 1,522
Join Date: April 18, 2005
Location: Catharpin
May 19, 2005, 04:15 PM

Its just a slip on, but what is odd is that it makes the noise with the stock muffler....thanks for your help.


You can live in your car, but you can't race your house.

'07 ZX-10R - 156 RWHP/182 MPH
'09 KX450F - VCHSS 29F
'85 ZL-900 Eliminator
'01 Ninja 250 (Sold)
'06 636 (Sold)
'99 ZX-6R (Sold)
'94 Ninja 250 (Sold)
'99 YZ-250 (Sold)
'73 CL 450 (Sold)
http://www.youtube.com/watch?v=a6Jpc...eature=related
http://videos.streetfire.net/video/H...bud_408656.htmfeature=related

The difference between men and boys is that boys make excuses and men make changes.
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  (#5)
boxing twins
 
hayabusafiend's Avatar
 
Posts: 581
Join Date: April 6, 2003
Location: Northern California
May 20, 2005, 12:04 AM

If the bike was jetted, it'll actually run richer when you mount the stock pipe.

Ticking noises are typically low oil level, old oil that's gotten very thin, low oil pressure due to low idle, or loose valve clearances (looser is better than tight).

That's your checklist.
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  (#6)
100% Kawasaki Biased
 
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Join Date: April 18, 2005
Location: Catharpin
May 22, 2005, 08:47 AM

the bike was not jetted, I use mobil 1 and change it every 3K, idle is within spec 1300+-50 I think its just a valve adj. does anyone know how to change the shims? do I have to remove the cams??


You can live in your car, but you can't race your house.

'07 ZX-10R - 156 RWHP/182 MPH
'09 KX450F - VCHSS 29F
'85 ZL-900 Eliminator
'01 Ninja 250 (Sold)
'06 636 (Sold)
'99 ZX-6R (Sold)
'94 Ninja 250 (Sold)
'99 YZ-250 (Sold)
'73 CL 450 (Sold)
http://www.youtube.com/watch?v=a6Jpc...eature=related
http://videos.streetfire.net/video/H...bud_408656.htmfeature=related

The difference between men and boys is that boys make excuses and men make changes.
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  (#7)
100% Kawasaki Biased
 
Thomas's Avatar
 
Posts: 1,522
Join Date: April 18, 2005
Location: Catharpin
June 1, 2005, 11:01 PM

OK so I syncd the carbs(barely off at all) adjusted the valves(needed none) and changed the plugs, still makes the noise, I think it must be an exhaust gasket around the headers or a cam chain tensioner.. I will let you guys know the parts should be on the way....


You can live in your car, but you can't race your house.

'07 ZX-10R - 156 RWHP/182 MPH
'09 KX450F - VCHSS 29F
'85 ZL-900 Eliminator
'01 Ninja 250 (Sold)
'06 636 (Sold)
'99 ZX-6R (Sold)
'94 Ninja 250 (Sold)
'99 YZ-250 (Sold)
'73 CL 450 (Sold)
http://www.youtube.com/watch?v=a6Jpc...eature=related
http://videos.streetfire.net/video/H...bud_408656.htmfeature=related

The difference between men and boys is that boys make excuses and men make changes.
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  (#8)
Meh
 
Posts: 7,968
Join Date: October 1, 2002
June 2, 2005, 10:13 PM

I would guess exhaust leak seeing as that is the last system you were messing with.
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  (#9)
Knee Draggin!
 
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Join Date: March 4, 2003
Location: Winchester, VA
June 4, 2005, 11:40 AM

ZX6 and ZX9's are noisy bikes by nature. I believe they have looser clearances than most bikes.
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  (#10)
Licensed Rider
 
Posts: 141
Join Date: May 27, 2005
Location: Fairfax, VA
June 5, 2005, 03:50 PM

Put your louder pipe back on and then get at the engine with a good ear. You'll be able to rule out, at that point, whether or not the noise is exhaust related. If it is, no worries. Othewise your tolerances may be loose... if you want to crack the case open you could go at it with a feeler gauge - if you want.
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  (#11)
whoa preppy......
 
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Location: Fredericksburg, Va
June 5, 2005, 04:57 PM

Quote:
Originally Posted by asteele2
Put your louder pipe back on and then get at the engine with a good ear. You'll be able to rule out, at that point, whether or not the noise is exhaust related. If it is, no worries. Othewise your tolerances may be loose... if you want to crack the case open you could go at it with a feeler gauge - if you want.
The tick would be at the head. The slip on would only mask the noise.


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  (#12)
Got my Permit
 
Posts: 55
Join Date: April 25, 2005
Location: Sterling
June 5, 2005, 08:04 PM

I dont think the pipe was the cause of the noise. When you put the quieter pipe on you could actually hear the noise. If it is the valves, you got alot of work ahead of you. It may be a normal noise. My 636 has ticked since like day one. .
On a side note, I dont think the bike running rich or lean would cause any ticking, just sputtering and backfiring.
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  (#13)
whoa preppy......
 
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Posts: 7,062
Join Date: May 19, 2005
Location: Fredericksburg, Va
June 5, 2005, 08:53 PM

Sometimes injectors on EFI bikes tick. Obviously the 99 is not EFI..but your 03 is.


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  (#14)
Got my Permit
 
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Join Date: August 16, 2004
Location: Vienna
June 5, 2005, 10:12 PM

Ninjas are noisy bikes anyways, you probably didn't notice it with the slip on on the bike. My 250 was a noisy sumabitch, and even my fzr makes alotta noise when I have my quiet exhaust on it.

To check for detonation, get on a hill at a (relativly) low RPM and give it some gas. It should be noticable sound like BB's bouncing around. Somehow I doubt that would be it though.

All else fails, screw driver to the ear and try to hear where it is coming from while it is sitting still (Unless you can put your ear to it while riding )


'95 FZR600 with R1 tail "Machina"

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  (#15)
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August 30, 2005, 02:56 PM

Does your bike have hydraulic lash dampners on the valves? If not, the valves will tick and can get louder when hot. Swtiching from loud to quiet pipes can make that particular noise stand out dramatically. Also (if it applies) changing helmets can make it stand out more.

Also note that valves tend to tighten, not get loose so they will get quieter when out of spec.
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