I've spent the morning replacing a Idle Cable and doing a Hard Reset of the TPS.

After cleaning out the crud from the throttle body intake I came accross a worn area where the butterfly valve has worn a groove into the side of the TB.

See Pic..

http://i40.photobucket.com/albums/e236/ ... C00641.jpg

Ignor the white flash seen in the picture but look by the hole & you will see where the BV has worn a groove in the TB ali casting. This creates a sticking point for the butterfly. Is this serious or am I overcausious.

It also makes doing a TPS reset a pain as the butterly sticks.

The wear is probably due to the fact that the TB is at a slight angle forwards, thus the butterfly's weight is forwards as well. Get my drift There is no wear on the other side towards the back end of the bike.

I've only cleaned the area with Carb Cleaner & NOT tried to smooth out this wear as this would cause untold problems.

What do you techs advise

Thanks,

Phil.

At least you know it is closed when doing the TPS reset.

This will not cause a problem as the throttle butterfly is *slightly* open (5 deg or so) at idle and is resting on the idle screw as the stop.

I wouldn't bother dressing it up...

_________________
08 Specialized Langster

What's the hole next to the butterfly I've read of a couple of butterfly shafts breaking on the bad weather forum ?

I think it is only an Air Hole but I'm sure the techs here might confirm