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Loud random air sound while riding
Posted: Sat Jul 13, 2013 6:58 pm
by Kolb706
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
Re: Loud random air sound while riding
Posted: Sat Aug 10, 2013 10:16 pm
by Pancake Sauce
Crack or leak in intake manifold? Is it running differently now that you have the air sound?
Re: Loud random air sound while riding
Posted: Sat Aug 10, 2013 10:19 pm
by motormike
^^^^^^^^^^^^^^^^ Pretty much the most informative post I've ever seen... 
Re: Loud random air sound while riding
Posted: Tue Aug 13, 2013 8:55 pm
by yamahauler660r
Kolb706 wrote:Bapppp, bapppp, psst, psst, bappppp, psst, bappppp, psst, psst
best sound effects ever
Re: Loud random air sound while riding
Posted: Tue Aug 13, 2013 10:30 pm
by motormike
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,... 
Re: Loud random air sound while riding
Posted: Wed Aug 14, 2013 12:55 am
by deuce217
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.
Re: Loud random air sound while riding
Posted: Wed Aug 14, 2013 9:27 pm
by Pete M
Exhaust gasket leak
Re: Loud random air sound while riding
Posted: Thu Aug 15, 2013 9:19 pm
by maddog
I agree, exhaust leak...