27-01-13, 08:44 AM
Start by fitting new plugs. So many starting problems turn out to be caused by old plugs. The fact that it doesn't happen when cold proves nothing.
While you are changing the plugs, remove the plug caps (they unscrew), cut 1cm off the wire and refit.
Also, clean out the ignition switch with WD-40. Flush it through completely to remove dirt.
Make sure the air filter is clean. If it is dirty it will make hot-starts difficult. Cold starts won't be affected by a dirty air filter because the engine needs a richer mixture to start.
While you are changing the plugs, remove the plug caps (they unscrew), cut 1cm off the wire and refit.
Also, clean out the ignition switch with WD-40. Flush it through completely to remove dirt.
Make sure the air filter is clean. If it is dirty it will make hot-starts difficult. Cold starts won't be affected by a dirty air filter because the engine needs a richer mixture to start.