2001 Chevy Blazer p 306 odb code

2001 CHEVROLET BLAZER
107,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JUDYSCHEVY
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I've gotten a p 306 (cyl 6 misfire). I've replace the spark plugs and wire. Ive changed the o2 sensor. I don't want it to get too expensive for me. What should i do next (p306 still exists). egr valve?, rotorcap or go straight for the catalytic converter?

I know I can reset and test each component as I replace, I just need to know how to proceed from here
Jul 19, 2009 at 2:27 PM
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RASMATAZ
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A specific cylinder misfire should prompt you to check the sparkplug/compression/injector for that cylinder.

Engine Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel
Jul 19, 2009 at 4:49 PM