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FJR Motorcycle Forums
Technical & Mechanical Problems
Fuel Tank Venting (WTF? why two?)
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<blockquote data-quote="RenoJohn" data-source="post: 734767" data-attributes="member: 3145"><p>I could not find this on a search, if it has been covered previously ...i'm ready to accept my penance</p><p></p><p><strong><em>Short question:</em></strong></p><p></p><p>There are two vent tubes coming from the bottom of the tank. Why Two ....what is the logic? (and/or what am I missing?)</p><p></p><p><img src="https://www.goraiders.org/bike/forumpics/misc/100505TankFittings%20(5)copy.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><strong><em>Long Question:</em></strong></p><p></p><p>Like many I've had some venting/boiling gas/high pressure issues on hot (100+F) days when running the bike hard hard.</p><p></p><p>Today I was under the tank and curious about the venting. There are two vents -why?.</p><p></p><p>---And, what have others done to help relieve high pressure build up on the cap of the tank? I recall a few folks drilling small hole(s?) ..has this been documented anywhere.</p><p></p><p>Sidenote:</p><p></p><p>Trust me when I tell you that installing a 3/8inch bulkhead is <em><strong>CONSIDERABLY</strong></em> more difficult than doing a 1/4inch or even a 5/16inch .....it is truly on the edge of realistic options.</p></blockquote><p></p>
[QUOTE="RenoJohn, post: 734767, member: 3145"] I could not find this on a search, if it has been covered previously ...i'm ready to accept my penance [B][I]Short question:[/I][/B] There are two vent tubes coming from the bottom of the tank. Why Two ....what is the logic? (and/or what am I missing?) [IMG]https://www.goraiders.org/bike/forumpics/misc/100505TankFittings%20(5)copy.JPG[/IMG] [B][I]Long Question:[/I][/B] Like many I've had some venting/boiling gas/high pressure issues on hot (100+F) days when running the bike hard hard. Today I was under the tank and curious about the venting. There are two vents -why?. ---And, what have others done to help relieve high pressure build up on the cap of the tank? I recall a few folks drilling small hole(s?) ..has this been documented anywhere. Sidenote: Trust me when I tell you that installing a 3/8inch bulkhead is [I][B]CONSIDERABLY[/B][/I] more difficult than doing a 1/4inch or even a 5/16inch .....it is truly on the edge of realistic options. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Fuel Tank Venting (WTF? why two?)
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