Question about 1991 BMW R 100 R

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Hi, I've got a bmw r100 rt 1981. At high speed 105 mph, after about 1/4 of a mile the engine cuts out and when speed drops to about 80 mph it starts to pick up again. The bike starts and runs fine although it might be slightly under power compared to a friends r100rs 1982

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Sounds like you need to look at the carbs there not getting a good fule flow to them,,,,check this first,,you need to adjust both carbs to open the same amount and this can only be done on the throtle cable's at the carb,,,if your bike feels a bit lower on power than your palls,,do a compreshion test on both bikes,,if his has more compreshion than yours thats why he can wip you on hills!

Posted on Jul 15, 2010

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Posted on Jan 02, 2017

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