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2003 Nissan Maxima. Problem just started on freeway this morning. Engine hesitates with loss of power four or five times. "Check Engine Soon" light blinks on dash. Codes P0306P/D(cylinder 6) and P0456 P/D show on analyzer. Car has 187,000 miles on it. Plugs have about 50,000 miles on them. Never had plug wires replaced. From front, which is cylinder 6?

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Jeffrey Turcotte

Nissan Master 8,991 Answers
Posted on Nov 02, 2010

Jeffrey Turcotte

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Joined: Aug 22, 2010

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Number 6 is in the front on the driver's side. I would swap the coil and wire with another to see if the problem moves with the coil. If yes, replace coil. If no, check plug and run a compression test (to check for burned valve or head gasket leak). Please let me know if you have any other questions.

2003 Nissan Maxima. Problem just - jturcotte_6.gif

jeharper Nov 02, 2010

I am a little confused. You say the #6 cylinder is in the front on the driver's side but the diagram shows #6 as being in the back on the driver's side.
Jeffrey Turcotte Nov 02, 2010

Oops, sorry I didn't explain. The arrow in this diagram is pointing to the front of the engine, but the engine is sideways in your car, right?

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