Exup Again

[GecHo]

as you may know i have recently sold my fazer and bought an R1and had the same problem with my fazer, i have posted my question on 2 r1 based forums but they are either full of numptys or just dont like me lol, here goes,,,,, i have adjusted the exup as per pats site and its set perfect always returns to dead centre after i have dont a ignition recycle BUT when the engine is running the vale looks like it is open way too much, lets say 5 to 12 instead of maybe 10 to 12 and when i rev the bike it doesnt rotate how it should, if i move the exup by hand and do the ignition its back to centre how it should, any help would be great coz i know you are a great bunch of chaps on here. also does the tps have any bearing on what the exup does as i have set it to 5 spot on and today adjusted it with engine running at 3800 and moved it to get the highest revs which was 4500 and all this has made no change, sorry and i get no error codes for either exup or tps
cheers Mick

[sadlonelygit]

99 Yamaha R1 EXUP valve operation

HTH

[Falcon 269]

The EXUP operates in response to several inputs, including gear, revs and throttle position.  Consequently what you see in neutral on the centrestand isn't necessarily what the valve is doing when you're actually riding. 

The TPS does play a part in cueing the EXUP but if you have it correctly set as per the methods you've used it shouldn't be adversely affecting the operation of the valve.

Provided the cables are correctly adjusted and the valve returns to the correct position as you mentioned, there's nothing more you can do and fretting certainly won't change anything. 

Unless you feel there's something wrong with the performance of the motor, I suggest you call it good and ride happy. 

[GecHo]

thanks for replys
after further investigation and decided to look more at the servo i have found that i have 3 teeth stripped from one of the cogs which may explain the lack of movement in the exup when revved, must have been lucky how it returned to correct position, so its time to spend yet more money, just wish i had kept hold of my fazer lol,,, as my mother always says You Will Never Learn,, what do mothers know lol,,, the video posted is hopefully how mine is later in the week,,
thanks again for all your help

[Falcon 269]

I have a brand new EXUP servo motor sitting in Cornwall awaiting a new home.

Drop me a PM here if you're interested.

Mike