My moped is making really loud air sounds randomly while I'm riding. I have a Yamaha razz with a dd50 motor. It has a pg long, 72 polini, 28 Oko, 7-1 gears. The sounds when I'm riding goes like this..
Bapppp, bapppp, psst, psst, bappppp, psst, bappppp, psst, psst
The bapp sound is my motor and the psst is the air sound
Loud random air sound while riding
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Pancake Sauce
- Goped
- Posts: 92
- Joined: Wed Jul 18, 2012 11:13 pm
- Location: TC, Michigan
Re: Loud random air sound while riding
Crack or leak in intake manifold? Is it running differently now that you have the air sound?
'09 Honda Metropolitan
'83 Honda Aero 80
'83 Honda Aero 80
Re: Loud random air sound while riding
^^^^^^^^^^^^^^^^ Pretty much the most informative post I've ever seen... 
RideRed
<Gyro S><MB5><Honda Navi><Helix><Sym Wolf><Yamaha Razz><Honda CH150 Deluxe>
"Live Large - Ride Small"
<Gyro S><MB5><Honda Navi><Helix><Sym Wolf><Yamaha Razz><Honda CH150 Deluxe>
"Live Large - Ride Small"
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yamahauler660r
- Spree
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- Joined: Fri Jun 11, 2010 6:53 pm
- Location: Otsego, Michigan
Re: Loud random air sound while riding
Kolb706 wrote:Bapppp, bapppp, psst, psst, bappppp, psst, bappppp, psst, psst
best sound effects ever 
My 2 wheeled bikes:
99 Elite S
97 Z50R
96 Elite S
89 Elite E x2
86/96 "Spree S/SpreElite"
87 Elite
86 Spree x4
86 Spree Special
85 Spree x3
84 Spree
83 Aero 80
80 XL250S
71 Trail 70 H
99 Elite S
97 Z50R
96 Elite S
89 Elite E x2
86/96 "Spree S/SpreElite"
87 Elite
86 Spree x4
86 Spree Special
85 Spree x3
84 Spree
83 Aero 80
80 XL250S
71 Trail 70 H
Re: Loud random air sound while riding
Kolb706 wrote:Bapppp, bapppp, psst, psst, bappppp, psst, bappppp, psst, psst
The bapp sound is my motor and the psst is the air sound
^^^^^^^...I'm glad he explained those sounds. Not sure if we could have figured that out....
and if you're a noob and you can't take the "ribbing"...don't go away mad,...
RideRed
<Gyro S><MB5><Honda Navi><Helix><Sym Wolf><Yamaha Razz><Honda CH150 Deluxe>
"Live Large - Ride Small"
<Gyro S><MB5><Honda Navi><Helix><Sym Wolf><Yamaha Razz><Honda CH150 Deluxe>
"Live Large - Ride Small"
Re: Loud random air sound while riding
Drain all gas from the tank, fill back up with fresh. Replace your spark and gap to .025", check head bolts loose/ maybe you have a bad gasket. Take a look around the engine for signs of fresh oily stuff leaking.
2000 Elite SR50 -THE PURPLE NURPLE
50mm BBK (tai)
26mm OKO (round slide) 135 Main Jet
V-8 pipe
39/18 secondary gears (7.583:1 ratio)
36 grams in Prodigy variator
Malossi Delta Clutch & WIng Bell- Thanks RED EFT
65mph GPS (on the freeway)
50mm BBK (tai)
26mm OKO (round slide) 135 Main Jet
V-8 pipe
39/18 secondary gears (7.583:1 ratio)
36 grams in Prodigy variator
Malossi Delta Clutch & WIng Bell- Thanks RED EFT
65mph GPS (on the freeway)
Re: Loud random air sound while riding
I agree, exhaust leak...
some people dream of speed, i own your dreams!