Smoking - Nissan Murano Forum
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post #1 of 17 Old 05-09-2019, 10:20 PM Thread Starter
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Smoking

I have 2009 murano with 179000 miles. Recently it has started smoking badly on startup. This has subsided to light smoke, and there are times when I start up with no smoke. While driving it will occassionally smoke as I start to accelerate. Do you think it the rings or is changing valve covers an option?
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post #2 of 17 Old 05-09-2019, 10:26 PM Thread Starter
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Help with part

Can someone tell me what this part is?
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post #3 of 17 Old 05-10-2019, 12:42 PM
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No idea, unfortunately.

When it smokes at startup, what color is the smoke?

Blue = oil
Black = gas
White = water

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post #4 of 17 Old 05-10-2019, 02:01 PM
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Can someone tell me what this part is?
From where did you remove the part?
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post #5 of 17 Old 05-10-2019, 09:53 PM Thread Starter
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Help with part

It was removed from intake manifold one on either side
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post #6 of 17 Old 05-11-2019, 11:54 AM
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It was removed from intake manifold one on either side
O.K. That's a vacuum-controlled actuator that's part of the Variable Induction Air System (VIAS). If you follow the vacuum tubing it'll end up at a solenoid that controls the actuator. The VIAS system is used to change the length of the intake runners based on engine speed for better efficiency.

It's not related to your smoking. Why did you take it out?
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post #7 of 17 Old 05-13-2019, 12:58 PM
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That pattern of smoking points to worn out valve stem seals.

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post #8 of 17 Old 05-13-2019, 08:58 PM
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That pattern of smoking points to worn out valve stem seals.
Perhaps. It would help if the OP answered Pilgrim's question.
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post #9 of 17 Old 05-13-2019, 09:54 PM
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Perhaps. It would help if the OP answered Pilgrim's question.
Thanks. If it's white or grey/black smoke, it's not valve guides.

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post #10 of 17 Old 05-21-2019, 09:46 PM Thread Starter
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Sorry for not getting back. I changed the valve covers and no more smoke!!!
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post #11 of 17 Old 05-22-2019, 03:07 PM
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Sorry for not getting back. I changed the valve covers and no more smoke!!!
When you said the car was "smoking" where did you see the smoke coming from? The tail pipe or the engine bay?
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post #12 of 17 Old 05-22-2019, 04:08 PM
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Aaaand...we still don't know what color the smoke was. Now it's gone, so all is well-maybe.

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post #13 of 17 Old 05-23-2019, 10:51 PM
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if changing the valve covers led to "no more smoke", i'd have to surmise that the smoke wasn't coming from the tailpipe and that it's color must've been more towards blueish. it would have been helpful to those trying to help this person if they had provided more/better information/details.
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post #14 of 17 Old 05-23-2019, 11:19 PM
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I heard the response on the valve cover and just laughed. Mark it up to “the internet”. LOL
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post #15 of 17 Old 06-06-2019, 09:02 PM Thread Starter
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The smoke was bluish. After parking over night and starting in the am the smoke exiting the exhaust pipes was as thick as it could possibly be. It would engulf the neighborhood. As I drove it would go away numerous stop while driving in traffic caused it to smoke as well. My mechanic thought the engine was gone. I saw reports on internet that described my problem. I bought the covers m($282 a piece). I put them on myself, once on vehicle smoke at startup then a little after driving. It now been a few weeks with no smoke or no oil loss. Only thing done was the replacement of the valve covers.
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