Wildguzzi.com
General Category => General Discussion => Topic started by: jsalazar on August 04, 2018, 07:26:23 PM
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My MGX-21 makes a noise after you shut it off on a hot day that has been described as a whale in heat. The whining noise comes from under the tank. The bike is releasing air pressure slooooowly through some sort emission friendly canister. The noise is embarrassing when people approach you to ask questions about the bike, which happens a lot. So here's how I took care of it.
1. Remove the two allen screws holding the metal cover that extends from the gas cap to the key hole. (see pic)
(https://thumb.ibb.co/bTGJLe/20180804_193410.jpg) (https://ibb.co/bTGJLe)
2. Remove gas cap then carefully pull the metal cover back towards the seat and it comes right off. (see pic)
(https://thumb.ibb.co/mPRhDz/20180730_201258.jpg) (https://ibb.co/mPRhDz)
3. Cut about 1/2 inch off of the black vent line and add a "Y" to it. You can get an assortment "Y" vacuum adapters from the your local auto parts for about $5.
4. I added a "Gas Tank Vent Line" purchased on Ebay for about $4 on the 3rd output of the "Y" (see pic). It's designed to let the tank breath, but not let any gas out should the bike fall. Many dirt bikes use these vent lines.
(https://thumb.ibb.co/gibSfe/20180804_134337.jpg) (https://ibb.co/gibSfe)
5. Put your metal cover back on and tighten the two allen screws.
6. Done!! No more whining noise.
I've seen similar complaints for the California 1400. I assume a similar modification would work for that bike too.
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might as well ditch the charcoal canister and 20 feet of hose then if your defeating the evap system.
The Evaporative Emission Control System (EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system.
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I just crack my gas cap in hot weather after a ride to relieve the vacuum sometimes, but more and more I kind of like the whale noises. I do like your permanent fix though, well done. :thumb:
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might as well ditch the charcoal canister and 20 feet of hose then if your defeating the evap system.
The Evaporative Emission Control System (EVAP) is used to prevent gasoline vapors from escaping into the atmosphere from the fuel tank and fuel system.
Yes agree, but didn't want to spend the extra time to pull the tank and fish it all out. Plus I thought if I ever sell the bike, the next owner may care more about the vapors escaping than I do and can undo my work around in about 10 minutes to resume the moaning sound.