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FJR Motorcycle Forums
Technical & Mechanical Problems
Gas Cap Modification
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<blockquote data-quote="skyway" data-source="post: 218300" data-attributes="member: 196"><p>This is how my gas cap seems to be operating. :huh: </p><p></p><p>Also, don't forget to trim the vent hose under the bike to prevent serious crud build-up in the gas cap area. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> </p><p></p><p>My guess with the venting issue of the cell is caused by excessive heat and expansion of air and gas in the main tank. The vent in the gas cap is not as efficient as the vent in the cell (blocked, dirty, too small, whatever), so when rapid air/fuel expansion occurs, fuel just heads to the back of the bike via the path of least resistance.</p><p></p><p>Since the Tanji is low lying cell, maybe back flow could be a bigger issue in this situation?</p></blockquote><p></p>
[QUOTE="skyway, post: 218300, member: 196"] This is how my gas cap seems to be operating. :huh: Also, don't forget to trim the vent hose under the bike to prevent serious crud build-up in the gas cap area. ;) My guess with the venting issue of the cell is caused by excessive heat and expansion of air and gas in the main tank. The vent in the gas cap is not as efficient as the vent in the cell (blocked, dirty, too small, whatever), so when rapid air/fuel expansion occurs, fuel just heads to the back of the bike via the path of least resistance. Since the Tanji is low lying cell, maybe back flow could be a bigger issue in this situation? [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Gas Cap Modification
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