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1978 CB750 Engine Noise

SpyderTyphoon

CB750 Member
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So I'm new to motorcycles and just picked up a 78K. I hadn't noticed at the time but the engine makes a clanking noise when running. Here's a video of it: https://youtu.be/1tzlbY7mgCo

Sounds off but I'm not sure. Any ideas?
 
Do carb sync with vacuum gauges and it will probably get quieter. Also double check the timing chain is adjusted. It will also probably get quieter with the clutch pulled in. Sounds like primary chain rattle to me, all 750 make it, will get worse the more miles are on the motor.
 
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