Post by
Onizuka »
https://forums.nicoclub.com/onizuka-u2660.html
Fri Feb 17, 2006 10:31 am
You could install the motor, unplug the ignition coils, fill the motor with really cheap oil, add some of that cleaning junk to it (seafoam?), crank it over a bunch of times, and drain.
I dont know what else to suggest without disassembling the motor, maybe someone else has a better idea.