Bought a bike that was standing unused for months. The battery could not hold a charge, so I had a new one fitted and a service.
However, when starting from cold the bike struggles. If I increase the throttle quickly the bike dies. If I use full choke and no throttle the bike dies.
To start the bike I have to press starter with no choke and no throttle. Then very slowly try to increase the throttle (too fast and it dies). Then once the revs increase I use the choke to keep the idle high. The then idles fine.
After a no more than a minute I turn off the choke, and the bike is fine. The bike then runs fine, and has no other issues.
What is this. As previously mentioned it has a new battery, and has been serviced recently (which included new air filter)
Please help....Any ideas....?