I noticed that this 1988 BMW K75 S would hesitate under hard acceleration during the middle RPM range around 3-4500. It pulls strongly from idle up to 3k, and the above 5k, the bike would accelerate quickly all the way to redline. I didn't replace the vacuum lines when replacing the fuel lines, so going back to see if changing to new vacuum lines will help eliminate the flat spot.

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TIMESTAMPS
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00:00 Introduction
00:30 BMW K75 S removing airbox to get access to the fuel regulator
01:09 BMW K75 S installing vacuum line to the fuel regulator
02:20 BMW K75 S reinstalling airbox
02:30 BMW K75 S checking vacuum caps on each intake
03:15 BMW K75 S check ride to see if the flat spot between 3-4500 RPMs

#bmwk75 #classicmotorcycles #wrenching

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