Hey guys, new to the forum here 
I just inhered a 1972 Yamaha DS7.
Soaked the carbs and blew them out about 8 times now.
New floats and needles (even though the carbs sometimes overflow). Float levels have been adjusted perfectly.
New electronic ignition (Timing is set perfectly).
Mixture screws set to factory specs.
Idle was set using directions in manual.
The bike sounds like it idles slightly rough and left cylinder is either backfiring or skipping. Stops backfiring and skipping when running just that cylinder alone though. When I connect both plugs, it starts spitting again. Not sure if that's normal.
When I take the bike out for a spin it has absolutely no power even in lower gears. Forget about making it up any hills. The island I live on has lots of short steep hills everywhere.
After running for about 5-10 minutes left cylinder will stop firing.
I'm thinking the coil could be bad?
Maybe there's something plugged up in the carbs that I can't see?
The bike has been sitting since 1975 so that carbs were pretty gunked up. Only ran a few times prior to being put away.
Any help would be appreciated. This bike is driving me up the wall.
I just inhered a 1972 Yamaha DS7.
Soaked the carbs and blew them out about 8 times now.
New floats and needles (even though the carbs sometimes overflow). Float levels have been adjusted perfectly.
New electronic ignition (Timing is set perfectly).
Mixture screws set to factory specs.
Idle was set using directions in manual.
The bike sounds like it idles slightly rough and left cylinder is either backfiring or skipping. Stops backfiring and skipping when running just that cylinder alone though. When I connect both plugs, it starts spitting again. Not sure if that's normal.
When I take the bike out for a spin it has absolutely no power even in lower gears. Forget about making it up any hills. The island I live on has lots of short steep hills everywhere.
After running for about 5-10 minutes left cylinder will stop firing.
I'm thinking the coil could be bad?
Maybe there's something plugged up in the carbs that I can't see?
The bike has been sitting since 1975 so that carbs were pretty gunked up. Only ran a few times prior to being put away.
Any help would be appreciated. This bike is driving me up the wall.