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Old 08-23-2012, 01:53 PM
03Altima 03Altima is offline
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2009 Rogue
 
Join Date: Dec 2011
Posts: 20
Default 03 Altima Cylinder 3 Misfire

Here is the issue....

I have a 2003 Nissan Altima 4cyl with 111,000 miles. The car up until this point has had no significant problems. I have always changed the oil myself and on schedule. Recently (past couple months) the car has begun to have a rough start. Seems like a misfire. Sometimes it wont do it for a while, other times it will do it every start up for several days straight. It has brought up a code only two times. Both were cylinder 3 misfire codes. I replaced the spark plugs, with no improvement. I replaced the #3 coil pack, with no improvement. It seems that my engine coolant is going low without visible leaks or odors. There does not appear to be any oil in the coolant or coolant in the oil.

The car will idle rough for anyway from 3-10 seconds. If I rev the engine, the symptoms go away. They also go away without revving after several seconds. The car runs perfect after the symptoms stop. No misfires while moving or jerks at high or low speeds.

Any ideas? Fuel injector? Head gasket? Valve cover gasket?

Thanks.
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