Bike is LOUD

Blackjack31
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Blackjack31
Edited Date/Time 5/23/2017 10:26pm
So I have a 2013 yz 125. I wire wheeled the paint off the stock pipe to get it to look more like a works pipe. I take good care of my bike and I am not just some kid who rides his bike and doesn't do any maintenance. Well my bike is sounding like it needs to be packed. Has the loud "pop" to it. But I just re packed the silencer last night and went to the race today and now it sometimes will still have that loud "pop" noise and sometimes it sounds good like it used to. My dad thinks it may be the little rubber gasket that hold the silencer to the pipe tight because my silencer does have a little play in it but nothing major. But I am worried that when I wire wheeled it that I thinned the metal out or something and ruined my pipe. Anybody had or heard of anything like this happening?
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boston_jorj
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boston_jorj 5/22/2017 3:05am
5/22/2017 3:05am
Stripping the paint off did not make it louder. I would suggest inspecting the seal from the cylinder head to the pipe.
Blackjack31
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Blackjack31 5/22/2017 9:28am
5/22/2017 9:28am
boston_jorj wrote:
Stripping the paint off did not make it louder. I would suggest inspecting the seal from the cylinder head to the pipe.
Didn't think of that. I'll look there but it just sounds like it's coming from the silencer. Could a silencer maybe have a hairline crack in it or something?
Harry Backmon 5/22/2017 9:37am
5/22/2017 9:37am
boston_jorj wrote:
Stripping the paint off did not make it louder. I would suggest inspecting the seal from the cylinder head to the pipe.
Blackjack31 wrote:
Didn't think of that. I'll look there but it just sounds like it's coming from the silencer. Could a silencer maybe have a hairline crack in...
Didn't think of that. I'll look there but it just sounds like it's coming from the silencer. Could a silencer maybe have a hairline crack in it or something?
There's a bit of an art to silencer repacking. You sure you got it right? I mean, it's not rocket science, but you gotta get it packed tight, but not too tight. Clear as mud right?

Before you repacked it, it was ok, right? If so, that's what I'd be checking. But certainly do get your crush gasket changed, and your midpipe joint seal changed.

The Shop

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peelout
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peelout 5/22/2017 9:39am
5/22/2017 9:39am
Blackjack31 wrote:
So I have a 2013 yz 125. I wire wheeled the paint off the stock pipe to get it to look more like a works pipe...
So I have a 2013 yz 125. I wire wheeled the paint off the stock pipe to get it to look more like a works pipe. I take good care of my bike and I am not just some kid who rides his bike and doesn't do any maintenance. Well my bike is sounding like it needs to be packed. Has the loud "pop" to it. But I just re packed the silencer last night and went to the race today and now it sometimes will still have that loud "pop" noise and sometimes it sounds good like it used to. My dad thinks it may be the little rubber gasket that hold the silencer to the pipe tight because my silencer does have a little play in it but nothing major. But I am worried that when I wire wheeled it that I thinned the metal out or something and ruined my pipe. Anybody had or heard of anything like this happening?
2013?

might want to check the sprocket bolts. funny year for the tuning fork brigade and torque specs
Harry Backmon 5/22/2017 9:41am
5/22/2017 9:41am
Blackjack31 wrote:
So I have a 2013 yz 125. I wire wheeled the paint off the stock pipe to get it to look more like a works pipe...
So I have a 2013 yz 125. I wire wheeled the paint off the stock pipe to get it to look more like a works pipe. I take good care of my bike and I am not just some kid who rides his bike and doesn't do any maintenance. Well my bike is sounding like it needs to be packed. Has the loud "pop" to it. But I just re packed the silencer last night and went to the race today and now it sometimes will still have that loud "pop" noise and sometimes it sounds good like it used to. My dad thinks it may be the little rubber gasket that hold the silencer to the pipe tight because my silencer does have a little play in it but nothing major. But I am worried that when I wire wheeled it that I thinned the metal out or something and ruined my pipe. Anybody had or heard of anything like this happening?
peelout wrote:
2013?

might want to check the sprocket bolts. funny year for the tuning fork brigade and torque specs
Hey, I got a 13 bro! Come to think of it, I do torque my sprocket bolts on the regular.
2T42
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2T42 5/22/2017 3:04pm
5/22/2017 3:04pm
It could be bad reeds or pipe o-ring, but very likely the sprocket bolts.
Sounds like they are unevenly torqued between 8 and 16 lbs.
Jono
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Jono 5/22/2017 4:43pm
5/22/2017 4:43pm
Your exhaust bearing might be worn out, I'd check that.
Flip109
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Flip109 5/22/2017 4:52pm
5/22/2017 4:52pm
It's starting it's period. Steer clear for 3 days min.
rmoto003
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rmoto003 5/22/2017 4:53pm
5/22/2017 4:53pm
Did you use RTV to seal the silencer?

No shit, the first few times I did my silencers, I didnt know to use it, and they would blow out and be super loud in the matter of a couple rides.
Swann
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Swann 5/22/2017 5:24pm
5/22/2017 5:24pm
Muffler bearing or muffler bearing seal. Might have compromised one of those things when you wire-wheeled the pipe. I used to wire-wheel my aluminum perimeter frames until I realized it was causing my EFI to run too lean.
2T42
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2T42 5/22/2017 8:18pm
5/22/2017 8:18pm
Blackjack31 wrote:
Sprocket bolts.... hilarious.
There is nothing funny about not properly torquing sprocket bolts bro.
Rockinar
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Rockinar 5/22/2017 8:48pm
5/22/2017 8:48pm
Just need to refill the pipe fluid probably.
ledger
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ledger 5/23/2017 12:06am
5/23/2017 12:06am
Rockinar wrote:
Just need to refill the pipe fluid probably.
^^^ This.
ga_pike
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ga_pike 5/23/2017 5:37am
5/23/2017 5:37am
Bros... Obviously it's the wrong ECU.
JRT812
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JRT812 5/23/2017 5:48am
5/23/2017 5:48am
ga_pike wrote:
Bros... Obviously it's the wrong ECU.
good call... it's probably on backwards
EZZA 95B
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EZZA 95B 5/23/2017 2:06pm
5/23/2017 2:06pm
You guys are just dumb. It's the Fetzer Valve, it's usually always the Fetzer Valve, sometimes.

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MXant15
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MXant15 5/23/2017 7:23pm
5/23/2017 7:23pm
What's wrong with having a loud bike, lady boys?



dirtnapper
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dirtnapper 5/23/2017 9:03pm
5/23/2017 9:03pm
Is nobody gonna ask what color powerbands he has??
Could be the issue right there.....
bvm111
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bvm111 5/23/2017 9:28pm
5/23/2017 9:28pm
EZZA 95B wrote:
You guys are just dumb. It's the Fetzer Valve, it's usually always the Fetzer Valve, sometimes.
It could be the by pass line???
EZZA 95B
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EZZA 95B 5/23/2017 10:01pm
5/23/2017 10:01pm
EZZA 95B wrote:
You guys are just dumb. It's the Fetzer Valve, it's usually always the Fetzer Valve, sometimes.
bvm111 wrote:
It could be the by pass line???
He'll need gauze pads for sure then.

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