clabedan
XS650 Member
Not for the faint hearted ;-)
Here we go
The bike is stuttering at mid revs and refuses to go any faster than 50miles an hour (xs2 with mikuni bs38 Solex carbs, megaton exhausts and Uni pod filters)...
Visible symptoms:
The spark plugs are completely black
The mixture screws are fully turned in (bike doesn't stall whatever set of carbs I use). The needle is positionned in the 3rd slot from the top(center position)
After changing the carbs to another set, cleaned them with ultrasonic bath twice, new diaphragms and brand new coils, the problem remains
I then started to check timing on both cylinder with a strobe light
The right cylinder is way off the F mark to the right (retarded) whereas the left one was advanced.
No problems getting the left cylinder in line with the mark but the right cylinder is still way off after moving the timing plate to the max... So nothing more I can do there to get it inline
Any possible issue somewhere else that can cause this on the right cylinder? Wear and tear somewhere that could cause this retard?
Any other idea about the plugs being black and the mixture screws completely turned in? Can all this be related?
Told you it wasn't simple
Posted via Mobile
Here we go
The bike is stuttering at mid revs and refuses to go any faster than 50miles an hour (xs2 with mikuni bs38 Solex carbs, megaton exhausts and Uni pod filters)...
Visible symptoms:
The spark plugs are completely black
The mixture screws are fully turned in (bike doesn't stall whatever set of carbs I use). The needle is positionned in the 3rd slot from the top(center position)
After changing the carbs to another set, cleaned them with ultrasonic bath twice, new diaphragms and brand new coils, the problem remains
I then started to check timing on both cylinder with a strobe light
The right cylinder is way off the F mark to the right (retarded) whereas the left one was advanced.
No problems getting the left cylinder in line with the mark but the right cylinder is still way off after moving the timing plate to the max... So nothing more I can do there to get it inline
Any possible issue somewhere else that can cause this on the right cylinder? Wear and tear somewhere that could cause this retard?
Any other idea about the plugs being black and the mixture screws completely turned in? Can all this be related?
Told you it wasn't simple
Posted via Mobile
Last edited: