if not chances are
1. sensor ler.. might be inaccurate mixture.. air and fuel..
2. throttle body.... carbonised...
if got jerk...ha.. maybe your ECU ker???
sifu-sifus out there,
i'm using a GSR engine on my wira,i've been using it for more than half a yr dee,b4 this it was all ok
till recently,i find tht the engine starts to jerk when i tekan on the accelerator,if...