zx6r high mph problem
#1
10-12-2008, 02:01 AM
Join Date: Sep 2008
Location: rome new york
Posts: 12
zx6r high mph problem
i have a zx6r 98 when im in first and second gear and full throttle its fine as soon as i get in third or fourth about 120 mph it bogs right down like to much fuel but i dont under stand why does anyone know of any problems like this
#2
10-12-2008, 05:35 AM
Join Date: Dec 2007
Location: terrorizing southeastern norf carolina
Posts: 2,092
Vacuum leak. check the vac lines running to the airbox.. bet ones off.. usually in the Kleen air system or float pressure air line.
welcome to KF!
welcome to KF!
#3
10-12-2008, 05:54 AM
Join Date: Dec 2007
Location: terrorizing southeastern norf carolina
Posts: 2,092
and now for an explaination as to why i say this. cuz i'm bored
at W.O.T., intake velocities are approximately 120MPH, therefore, at such speed, the ram air starts to create positive air pressure on the carbs and airbox. a vac line leak will pressurize the float bowls unevenly in the carbs and result in a lean condition. bet ya dollars to dounuts it backfires like a MF'er when you're at speed, and it stumbles a bit at moderate-speed heavy acceleration? (around 60-90mph, 5th and 6th gear roll-ons..)
at W.O.T., intake velocities are approximately 120MPH, therefore, at such speed, the ram air starts to create positive air pressure on the carbs and airbox. a vac line leak will pressurize the float bowls unevenly in the carbs and result in a lean condition. bet ya dollars to dounuts it backfires like a MF'er when you're at speed, and it stumbles a bit at moderate-speed heavy acceleration? (around 60-90mph, 5th and 6th gear roll-ons..)
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