my Mehran is perfect on CNG
but while on Petrol as i press accelarator, car takes a breath and giv a jerk and then move forward
and sometimes i also feel lil jerks while long run at high speed
the jerky feelings comes minimize if i press accerator very slowly
It happening both in idle positin and in running position
Experts tel me wht the exact problem can b??????
i have done the following;
Leads, plugs, coil, point and air filter r new
have cleaned the carburator twice including all jets
Mitsubishi electric kabli fuel pump installed and its working well
But after all these the jerky problem on Petrol is unavoidable............experts post ur comments and suggestions plz.