sounds electrical ,check fuses,wire plug connections at the coils,the spark plug leads can corode inside and cause high resistance. hold the plug wire and try to pull the plug cap off. if it comes right off the inside of the wire will look coroded simply cut 1/2" off the wire and the core should look new. then thread the plug caps back on (stock type). Check coil resistances both primary an secondary sides. if you need the specifications i can supply them for a usa model.good luck