Engine, Acceleration

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Engine, Acceleration

huseinrokadia
I recently bought an '80 Custom CB 750 with 14K miles on it. The bike is decent physical shape and runs well. However, I have noticed that it has trouble accelerating in the 3rd, 4th and 5th gears. The fastest I can go is around 50mph without bringing on harsh vibrations. I am not sure if this is typical or some thing that needs to be fixed. The guy who sold me the bike said he synced the carbs in 2013.

Any comments appreciated.

Thanks,
Husein
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Re: Engine, Acceleration

Re-run
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We would need more info on your bike: type of filter, any other mods, color of the spark plug insulator, things like that.
The ride IS the adventure. The destination is just to get gas!
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Re: Engine, Acceleration

TOOLS1
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In reply to this post by huseinrokadia
Vibrating means something is out of balance. Can you feel the vibration in your hands, or your butt? This will get us pointed in the right direction.
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)