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Old 07-17-2009, 12:08 AM   #1 (permalink)
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Slow exceleration at hwy speed

1999 fxr It runs good except when you try to excelerate at hwy speeds. If you open the throdle slow it will gain speed but open it fast and it is bad slugish..I have changed plugs and they continue to look good to me. Thank you in advance for your help.
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Old 07-17-2009, 12:16 AM   #2 (permalink)
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my guess is a vacume leak. I have 2000 88ci and a small plastic line was leaking and it did the same thing.
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Old 07-17-2009, 03:05 AM   #3 (permalink)
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If it's been rejetted, the main jet is too big. Next time, try to notice that when it bogs, does it pick back up as you roll OFF the throttle? If so, classic sign of too big of a main jet.
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