My son took his XS750's top end apart to investigate an oil leak.
Here are shots down the exhaust ports:-
#1 valve is bone white
![](http://i758.photobucket.com/albums/xx221/fredintoon/XS750%20rig/P1010159-1.jpg)
#2 valve is sooty black
![](http://i758.photobucket.com/albums/xx221/fredintoon/XS750%20rig/P1010160.jpg)
#3 valve is oily black
![](http://i758.photobucket.com/albums/xx221/fredintoon/XS750%20rig/P1010161.jpg)
And yes! Those are all from the same engine. Ideas anyone?
Here are shots down the exhaust ports:-
#1 valve is bone white
![](http://i758.photobucket.com/albums/xx221/fredintoon/XS750%20rig/P1010159-1.jpg)
#2 valve is sooty black
![](http://i758.photobucket.com/albums/xx221/fredintoon/XS750%20rig/P1010160.jpg)
#3 valve is oily black
![](http://i758.photobucket.com/albums/xx221/fredintoon/XS750%20rig/P1010161.jpg)
And yes! Those are all from the same engine. Ideas anyone?
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