Hello, I'm riding an '85 TY 250, and it seems to suffer from pinging quite a lot, as well as pre-ignition.
The current spark plug is an NGK B8ES, and I'm unsure whether a colder or hotter plug will remedy this, or if there's more involved.
Is this fault common to this particular model?The bike is in good condition, originally being registered on the road, with 600 km. on the odometer.
Thanks, Jason.