94 xp 657x just doesn't sound right...

[nsschwenk]

I did a more complete clean of the carbs last night. My needle and seat are okay and everything is spotless, clean, and clear. I did notice that my High Speed screws were completely closed or barley open.

I did notice in this picture below that the right carb was completely dry and dusty on the inside like no fuel has passed through it in a while.



More pics of the carbs



What are the correct initial high/low speed screw settings? The service manual is really unclear on the initial settings.

Currently:
LS = 1.5 turns from seated
HS = 0.25 turns from seated

 

[nsschwenk]

I took some pictures of the cylinders and pistons. They do have some large scratches on the walls near the ring gaps. It explains the low compression. They still are combusting fuel correctly as they are not dark and wet. My objective is to simply just get the engine running correctly and replace the top end in a few months at the moment.

I notice the pistons have a large ring gap.



The manual says it should be (0.25-0.4 mm) to a max 1 mm clearance.



I am going to remove the cylinders tonight to inspect the crank case. I am looking for piston rod slop and a possible oil leak. I'll give the cylinders a quick hone before I re-install them back on.

I can't get the ski to stop smoking really bad. Could it be from a leaking rotary valve seal or any other crank seal?