Guys,
Need some help, Have a 129, picked up last fall.
Had blown head.
over the winter did a complete engine tear down and rebuild. New piston,valves, bored .010 over cylinder scored. new coil points cam and crank were within tarlorances. put back together this week end, went to start and it is back firing, out the carb and the exhaust?
Though was timing, static timed it was dead on the S at a little over .020, though might be carb, also rebuilt carb. installed carb from 1200 same thing.
It tries to run and is stiping and sputtering.
Might it be the valves are not closing and opening properly?
have check the clearances at TDC seams right, pulled head lots of carbon on piston and valves for not running dark black?
Need to know what to do next?
This is my first complete rebuild!
Thanks,
Dave
Go Cub