AOA Brothers i have recently Installed 1SZ-FE in My Charade 84 Everything is Working fine but when i Drive my Car for approx 15 to 20 km or when the Engine Reaches Optimum Temp , Car starts Jerking on Intervals . Drops RPM .and on a Traffic Signal When Car is in Idle Position i shift to 1st Gear it does not Pick up after two or three Jerks and pressing the pedal continuously it goes Away and Again on next Signal same Issue. And When Engine is left idle position after some jerks engine is off. This Only Happens When Engine is heated or reaches optimum temperature on Cold it Runs Well. I have recently Changed Stock plugs to Toyota Genuine Plugs Denso Iridium K16R-U11.
Whats the Possible Error ? is it
1) Any Sensor issue
2) Any Injector or Coil issue
3) Any Fuel Pump Issue
4) or ECU Error
Experts i need your Help in this Regard your Suggestions will be Highly Appreciated.