P0306 help

[Macneilrider87]

Hey guys how's it going new here and already need help ha. well I got a 2000 ford ranger 4x4 3.0 auto. the check engine light came on and it's p0306. I checked the air filter it was good. pcv valve was good too. I replaced the spark plug and gapped it correctly. it's an auto ligth. I also got new wires for it and still nothing. I think I used the multimeter right because when I paired the cylinders 2 and 6 on the coil pack I got 14.5 on it and my haynes manual says 13-15 k ohms is acceptable. hmmm the only other thing I can tell you is sometimes it hesitates to start when I turn teh key and have to push on the gas to get it start. also when I'm steady at 45-49 miles on the high way it will drop 500 rpms and shake bad until I push harder on the gas or completely let off and hit it again. could it be the number 6 fuel injector or something worse like internal? any help would be much appreciated thanks.

 

[jasongind]

A code P0306 may mean that one or more of the following has happened:

Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

 

[family builders co]

My P0306 was a valve seat. Cranking compression was ok, running compression was low.