Reply To: GT 250 not delivering in low RPMs and problems to startup after a ride
Good points by Simon!
Also please make sure the “RUBBER DUST” cover on the front engine head is actually fully sealing the spark plug hole.
If it’s wet , the water from the front tyre flies to the engine heads, then water tries to invade the spark plug hole (where your HT cap hides) -If dust cover is cracked or looks bad, i’d just replace it.
Speaking of wetness, inspect your air filter too. Wet air from the filter or plug holes = spark plugs will bog down and bike get the signal to kill sparks off (hence sudden loss by your bike , forcing you to pull over, risky business in a busy wet day!)