P0302 nissan sentra 2004 1.8 0302 code

Question

i replace the spar plugs, the ignition coil i checked the intake for any air leaks but nothing and my car still shaking and when i speed up the motor dont responde..can you help me?

Answer 1

Hi there,

Do a cooling system pressure test. Put the tester on it for one hour, then remove the plug and coil and look for any coolant on top of the piston. You can also try swapping the injector with the one next to it and see if the misfire moves with it. Finally, check compression, if there is more then a 10% difference between the cylinders then there is an internal engine issue.