White smoke on startup and dnostic showing #1 cylinder misfire

A forum for the Nissan Armada, Infiniti QX56, and beginning in 2014, the Infiniti QX80
Bigoledude
Posts: 1
Joined: Tue Sep 08, 2015 11:09 am
Car: 2007 Nissan Armada

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My 2007 Armada started blowing white smoke on starts. Then, it started to run rough. If I'm running down the highway around 50mph and try to accelerate, it really starts to run even rougher. Even while at idle you can feel a definite miss.

The first diagnostic check showed #1 cylinder misfire so, I bought a coil. After installing the coil and allowing 20 minutes to reset the computer as directed by auto parts store clerk, it hasn't improved 1 bit!


marctronixx
Posts: 518
Joined: Tue Sep 27, 2011 2:07 pm

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valve cover gasket worn possibly...

Headwi
Posts: 1
Joined: Thu Jan 28, 2016 7:24 pm
Car: 08 armada le

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Over two years, had to replace two cats due to this white smoke problem clogging them. Went to two independent mechanics and dealership 3 times. Dealer said engine was shot and gave me prices for new and used. Saw on a forum others with same problem. Changed $130 plastic valve covers and gaskets. Been running like new ever since. 4 years ago


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