Hello. I bought an Explorer Cracker used 2 years ago around a few hundred euro because my wife needs the car and I drive with it 3 km to work. The part always went great and jumped immediately after the winter. Now it is so when I drive full throttle and come to about 40 kmh it is like when I pull the brake and let go again and again and again. Up uphill the junk also pulls nothing more at all. The petrol is 4 months old but that is certainly not the problem. gasifier I have to adjust very fat (completely and half a turn on) so that I reach the 40 kmh, otherwise “brakes” already at 35 kmh when I lean. What was done: New spark plug, without air filter insert tried, carburettor disassembled and cleaned. Did not help anything.