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Nissan - 2004 Nissan P0301 code

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2004 Nissan Frontier 4 cyl auto. I get a P0301 code (#1 cyl misfire). This truck doesn't have a coil for each spark plug , so I was wondering if this code is truly for # 1 cyl , or just that it is the first one checked ?

I changed the plugs, wires, distributor cap ,rotor, fuel filter. Used Sea Foam and Lucas in fuel to clean injectors. Nothing helped. When the truck is in overdrive and low rpm's , it shakes badly. I am assuming this is because of low torque. When it gets to 60mph or I take it out of overdrive the shake goes away.

Listened to injectors and they sound like they are clicking open and closed.

My fuel mileage has suffered greatly and I am at a loss to figure this one out.

Any ideas?

Thank you,

Dave
Date: Jul 27, 2012    Labels: Nissan


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