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Discussion Starter #1
When I was out riding my Yamaha VX 1100 the RPM suddenly dropped to 6500for abot 15 seconds before the engine started to increase and decrease RPM.

Whenever the engine is warm now, the RPM is constantly going up and down.
The more Throttle I give, the more the variation.
At idle, it goes up and down between 1000 - 2500 RPM, If Pump with the gas i can hoild it in a somewhat steady planning, but it´s not a very pleasant way to ride...

It runs fine when the engine is just started and the motor is not yet warm.

Any ideas?
 

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Discussion Starter #3
put brand new spark plugs in and check the filter. Very simple.
Thanks for the advice, but ivé already checked that.
It runs clean, i mean, no stuttering or anything, it just does not hold the rpm steady at all almost like something is constantliy pulling the throttle up and down..
 
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