I am working on a 1980 KZ 750 4 stroke twin. It sat for 20 years. At first when trying to get it running after all these years it would not idle the right pipe didn't get hot and it pop through the carbs. So, I changed the points and condenser, set the gap and timing per the manual, and gave it a compression test ( both cylinders are good and equal) . I rebuilt the carbs. Now both pipes get hot it will idle and it smoothes out on the high end, however, it is still popping through the carbs under acceleration and has a hard time revving up. Any help would be greatly appreciated. Could this be a coil problem? Is there a key on the shaft at the timing plate that may have sheared? In the ignition system are there any more components then: Points, Condenser, coil, ?
Thanks in advance