RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

Code 306 Cylinder 6 misfire

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Old 11-26-20, 01:16 PM
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gilbertg
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Default Code 306 Cylinder 6 misfire

So I replaced spark plugs and swapped out the coil from cylinder 6 to 5. still getting a misfire code. Any suggestions?
Old 11-26-20, 02:02 PM
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Mesquite77
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Compression test, or first log the fuel trims.

How is it idling? Miles? 330 or 350, service history?
Old 11-26-20, 02:31 PM
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spinellib
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Originally Posted by gilbertg
So I replaced spark plugs and swapped out the coil from cylinder 6 to 5. still getting a misfire code. Any suggestions?
Did you erase the code after you replaced the plug/coil?
Also, how does it run?
Old 11-27-20, 07:54 AM
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mandyfig
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How did you find out the code? Do you have a code reader? As recommended you should clear code as well. There is a procedure on how to distinguish an Ignition Coil or Spark Plug issue (or both). Gooxle it. Or search this forum.
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