pathfinder 2002 misfire

[ALMANZAARTUR]

hi i need some of your help i got a path 2002 it had a evap very small leak detected one day when i was going to work starts shaking an check engine blinks so a put the scanner and gave me a P0301 code misfire cyl.1 ok when i get out of work plug the scanner again and now it saids p0302 cyl.2 and until now is the resent code it has i change the coil and the spark already and had no luck what could be? oo one more thing the evap leak code p0456 is not coming any more just the p0302

[centralcoaster33]

Hi and welcome to NICO Club!

Sorry about your car issues. I think you should use the diagnostic procedures in the Factory Service Manual (FSM). Check out the EC chapter and look at each of your code numbers and what it says to do to diagnose them. Skip through steps that require a consult and you'll find steps that use simple tools and voltmeters.

O2 sensors, coils, plugs, injectors, compression, MAF, etc. could be the cause. That's a lot to blindly replace.

Here's a link to all the chapters (each of which you can download to your device). Please let us know how it goes and if you have further questions on any specific steps or procedures.

http://www.nicoclub.com/FSM/Pathfinder/2002_Pathfinder/