It aint rocket science
Join Date: Nov 2010
Location: Glastonbury, Connecticut, USA
Model: The best
A sync is not a cure or fix for an improperly running engine, it is the icing on the cake and is done lastly when all else is in proper operation and tune. Start with the basics, a compression test is always advisable along with plug wire and spark quality available to the plugs, ignition timing and valve lash check/adjustment.
Then it is on to carbureation checking which cylinders are running rich, lean or correctly.
There is NO substitute for experience
I'll be around when I come around and not before
Internet myth buster
WS Grand Chapter CT
If local and need help with a 1500, Valkyrie or ST repair please PM