Yamaha TW200 Trailway Discussion Forum

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11-30-2008, 9:58 PM trailz_rider Joined on 04-24-2008 Arizona Posts 243 Curious about gas cap vent hole I've read a few times about a tiny vent hole in the gas cap and I'm not seeing it on my bike. I'm not having any problems with the bike but when I was filling up for fuel I didn't notice a tiny vent hole in the cap. If somebody has the time, please post a photo of this vent hole. Thanks in advance. '95 TW, 2k2 TW, '07 Ninja 250    Report

12-01-2008, 5:55 AM peruano Joined on 03-17-2008 New Mexico Posts 128 Re: Curious about gas cap vent hole You raise an interesting question. Does the TW have a vented gas cap? I suspect it does because I never hear the woosh suction sound when the cap is removed to refuel. I ask because I bought an unkeyed Yamaha fuel cap from my local shop to cover an unused tank, but am tempted to use it on the tw because I don't really need a locked gas tank and it works much more smoothly than the oem locking version. It was a few bucks instead of the $50-75 for a replacement keyed version. I realize I should just put it on and run it to see if it causes problems but your question prompted my considering that option. The local shop had a whole box of them and likely other shops do also. tom "I was just trying to have me some fun." 2002 TW200 Metal XT350 tank - 3.1 gal. Moose Racing hand guards and bars.    Report

12-01-2008, 9:34 AM JimmyD Joined on 10-08-2008 Halifax, Nova Scotia Posts 160 Re: Curious about gas cap vent hole Usually the keyhole is used as the exterior vent. As I recall the cap is vented down through the locking mechanism, the cap is hardly air tight. Oh. And it leaks when the bike is on its side... ;) 2007 TW200 - 130# main, 15T front sprocket 1995 EX500 - for sale...?    Report

12-01-2008, 11:28 AM Igofar Joined on 06-28-2008 Posts 181 Re: Curious about gas cap vent hole On my 08's, if you turn the cap upside down, and look at the black plastic along the edge of the cap, you'll see a little square area with a very tiny pin hole in it.  I suspect this is the vent.  A couple guys I rode with had the vents plug up and create a vacume causing the bike to appear to run out of gas.  This is the area I cleaned and blew out with air that corrected the problem. Hope this helps.    Report

12-02-2008, 12:46 AM trailz_rider Joined on 04-24-2008 Arizona Posts 243 Re: Curious about gas cap vent hole Would be great if one of the folks here that know where this vent hole is would post up a picture. Curiousity is killing me. '95 TW, 2k2 TW, '07 Ninja 250    Report

12-02-2008, 7:17 AM a500gshock Joined on 04-12-2008 South Florida Posts 221 Re: Curious about gas cap vent hole You want to see the vent holes? rub some 2 stroke oil on the gas cap and wait a day or two while you ride, i did it because i wanted to get the color back on mine (is lost some of the color from being left outside).    Report

12-03-2008, 6:09 PM trailz_rider Joined on 04-24-2008 Arizona Posts 243 Re: Curious about gas cap vent hole edit #$$%^^& !@#%$% '95 TW, 2k2 TW, '07 Ninja 250    Report

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