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FJR Motorcycle Forums
Technical & Mechanical Problems
Gas Mileage dropping - no reason I can see
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<blockquote data-quote="birkdale10" data-source="post: 1153553" data-attributes="member: 28060"><p>Thought I'm make a 3rd update. First, actual factual decrease in gas mileage.</p><p></p><p>I bought the bike in Oct 2004. I created a spreadsheet back in 2005, and started using it 'seriously' in late 2005. I have kept track of every fill up I have put in the tank since then. MPG for every tankful, # of miles for every one, miles on reserve.</p><p></p><p>I started this thread in April. But May is now gone, and here is what I have. I looked at my spreadsheet, and took every fill up in May for every year since 2006.</p><p></p><p>All Mays: 2006 - 2103 average: 45.35mpg Best May: 2006: 46.94. Worst 2011: 43.44</p><p></p><p>May 2014 Average : 36.48mpg</p><p></p><p>My handy-dandy calculator tells me that is a 20% difference. I think...that is significant.</p><p></p><p>I have gotten in touch with the local Yamashop, but nothing has been decided yet.</p><p></p><p>There is one other piece of info that I hope someone will read and give me some helpful advice about. I went for a ride today - just a short one, 40 miles. After about 8 miles, I looked down and the yellow 'check engine' light was on. I have NEVER seen that lit before, other than when the bike starts. It stayed on for about 2 minutes, then went out. About 20 miles later, it came back on again for about 2 minutes, then went out.</p><p></p><p>I'm seriously starting to get worried about my bike.</p></blockquote><p></p>
[QUOTE="birkdale10, post: 1153553, member: 28060"] Thought I'm make a 3rd update. First, actual factual decrease in gas mileage. I bought the bike in Oct 2004. I created a spreadsheet back in 2005, and started using it 'seriously' in late 2005. I have kept track of every fill up I have put in the tank since then. MPG for every tankful, # of miles for every one, miles on reserve. I started this thread in April. But May is now gone, and here is what I have. I looked at my spreadsheet, and took every fill up in May for every year since 2006. All Mays: 2006 - 2103 average: 45.35mpg Best May: 2006: 46.94. Worst 2011: 43.44 May 2014 Average : 36.48mpg My handy-dandy calculator tells me that is a 20% difference. I think...that is significant. I have gotten in touch with the local Yamashop, but nothing has been decided yet. There is one other piece of info that I hope someone will read and give me some helpful advice about. I went for a ride today - just a short one, 40 miles. After about 8 miles, I looked down and the yellow 'check engine' light was on. I have NEVER seen that lit before, other than when the bike starts. It stayed on for about 2 minutes, then went out. About 20 miles later, it came back on again for about 2 minutes, then went out. I'm seriously starting to get worried about my bike. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Gas Mileage dropping - no reason I can see
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