2009 range rover sportcodes PO304 PO306 PO308 codes
 

Driving the truck today engine started to rumble misfire pulled codes PO300 PO304 PO306 PO308 got it home pulled plugs tan surface dry, cleaned throttle plate, I took ignition coil from good cylinder (no codes) and installed on cylinder 6 no change.

So far replaced the air filter, checked plugs NGK IR, cleaned throttle plate assembly, checked coolant level full as always no wet cylinder's.

Bought this truck used not sure about the fuel ran in it could it be an 02 sensor issue would someone happen to know what the out put reading should be for both banks.

Want to take the logical next step not sure what that is. Could it be an electrical issue cant rule that out at this point.

Anyone have issues like this that can lead me in the right direction

Truck has 121k on it I did the brakes this year its been trouble free up to this point,

range rover sport throwing codes follow up
 

Ser3 here just wanted to follow up on repair replaced air filter, cleaned MAS sensor, and throttle plate assembly with approved cleaner.
Checked all plugs and wires no issues.

After clean up truck runs fine didn't take into account the fine dust in the Coachella valley when the winds blow in from Mexico. Just changed every thing before we moved here six months ago.

Hope this helps someone.

Cheers