Constant p0304 code on 02 Civic Ex.

[Deth4u669]

Replaced egr and pcv valves, plugs, coil packs, downstream O2 sensor and valve lash adjustment. Engine light will not stay off. Any help would be appreciated.

 

[boofoo2]

Compression test the cylinders.

 

[Deth4u669]

Replaced egr and pcv valves, plugs, coil packs, downstream O2 sensor and valve lash adjustment. Engine light will not stay off. Any help would be appreciated.

Will do. Thanks.

 

[boofoo2]

Also check the fuel injector for cylinder 2.