Do US bikes have a valve cover vent?
I've just put my top end back together, and have left the carb heater off (I'll only put it back if I have problems).
This has left me with a pipe coming from the valve cover - currently just venting to atmosphere.
I'm thinking of just blanking it of - the circuit is effectively closed off until temps drop anyway (if I understand how it works).
Things is past bikes have had a vent in the valve cover, so is something going to screw up?