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FJR Motorcycle Forums
Technical & Mechanical Problems
AGirl's 07 ==> altitude sickness
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<blockquote data-quote="one day" data-source="post: 243956" data-attributes="member: 4525"><p>Sounds like vapor lock. How much gas was in the tank? How long had you been riding with that tankful? How warm was it? What octane did you fill up with at Las Cruces? 87 or 89?</p><p></p><p>That 3rd stop with less gas, would mean even with the engine heat management improvements (06 07) that the gas in the tank would be warmer. Higher elevation means more easily vaporized gas (which is why the minimum octane is 89 at higher elevations and not 87)--and given the fact that the FI systems were changed and that they don't have a return line to the tank may all contribute to your problem.</p><p></p><p>This is all speculation, but it is based on my experience with a Jetta that would run like crap If the gas got too low, If it was real hot out, If I was stuck in traffic. The in-tank transfer pump had failed and the main fuel pump would occasionally vapor lock.</p><p></p><p>A suggestion, run a higher octane at higher altitudes.</p><p></p><p>Did D&H test for fuel pump for output flow?</p></blockquote><p></p>
[QUOTE="one day, post: 243956, member: 4525"] Sounds like vapor lock. How much gas was in the tank? How long had you been riding with that tankful? How warm was it? What octane did you fill up with at Las Cruces? 87 or 89? That 3rd stop with less gas, would mean even with the engine heat management improvements (06 07) that the gas in the tank would be warmer. Higher elevation means more easily vaporized gas (which is why the minimum octane is 89 at higher elevations and not 87)--and given the fact that the FI systems were changed and that they don't have a return line to the tank may all contribute to your problem. This is all speculation, but it is based on my experience with a Jetta that would run like crap If the gas got too low, If it was real hot out, If I was stuck in traffic. The in-tank transfer pump had failed and the main fuel pump would occasionally vapor lock. A suggestion, run a higher octane at higher altitudes. Did D&H test for fuel pump for output flow? [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
AGirl's 07 ==> altitude sickness
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