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post #1 of 9 Old Oct 19th, 2018, 04:32 PM Thread Starter
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New Member with Sludge in Engine

Hello,
New member here. I have a 2015 Nissan Murano that has sludge in the engine. It only have 51,000 miles. And yes, I changed the oil.... At every start up, I get BIG puffs of white smoke. I really like Nissan, as this is my second Nissan vehicle, but this sludge issue is changing my mind. Has anyone else had or have this problem. Everyone tells me to trade it in. Nissan says I need a new engine. Any suggestions or fix?


Last edited by LynMarStat; Oct 19th, 2018 at 04:39 PM.
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post #2 of 9 Old Oct 25th, 2018, 05:00 AM
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Wow Nice Km. Welcome to the forum dude.
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post #3 of 9 Old Oct 26th, 2018, 08:37 AM
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Hi and welcome!
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post #4 of 9 Old Oct 26th, 2018, 11:51 AM
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You may want to have it examined by someone else. White smoke sounds like a headgasket problem. Is your old black or is it kind of like chocolate milk?
Anyway its surprising on such a young engine that has not done incredible mileage. If it is sludge you can have the engine cleaned with seafoam or something similar.
You might also want to make sure the oil used is the right viscosity, and ideally use a full synthetic that will prevent sludge in the first place. Good luck. Let us know what you find out.
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post #5 of 9 Old Oct 26th, 2018, 11:23 PM
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Quote:
Originally Posted by LynMarStat View Post
Hello,
New member here. I have a 2015 Nissan Murano that has sludge in the engine. It only have 51,000 miles. And yes, I changed the oil.... At every start up, I get BIG puffs of white smoke. I really like Nissan, as this is my second Nissan vehicle, but this sludge issue is changing my mind. Has anyone else had or have this problem. Everyone tells me to trade it in. Nissan says I need a new engine. Any suggestions or fix?
Are you getting white smoke only at startup? If so, then it's probably water vapor which may be caused by a blown head gasket or a crack in the head casting from the water chamber to the combustion chamber. Perform a compression test on all cylinder and then if you find a suspect cylinder, follow it up with a leak-down test which will pretty much nail down the actual defect spot.

However if the smoke is blue in color and is always there, then that's an indication of oil burning. A good way to test for oil burning is to first fully warm up the engine. Stand behind the car. Have someone rev the engine to around 4,000 RPM and hold at that RPM for about 15 seconds. If you see a lot of blue smoke come out of the tailpipe, the engine is burning excessive oil. If it's black smoke, then it may be leaking fuel injectors.

If it turns out to be ether a blown head gasket or a cracked head, the expense of that fix is considerably less then a total engine replacement.

If you plan to de-sludge the engine, step #1 - manually clean out the valve chamber area that's under the valve cover. Step #2 - drop the oil pan and clean out any sludge there; remove the oil pickup screen and clean it. Be real careful when using any sludge remover; run engine for some short period of time, then drain oil and replace oil filter; do this at least 5 times. Just use some cheap oil and filter when doing the cleaning. If you don't go through the drain/replacement cycling like I suggested, you could end up with a lot of loose sludge that could plug up some critical oil galleries and cause engine damage.

KA-T for life, yo!
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post #6 of 9 Old Nov 3rd, 2018, 03:26 AM
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Hello and welcome to the forum.
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post #7 of 9 Old Jul 9th, 2019, 06:19 PM
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Is it really “sludge” same issue 2015 Pathfinder only 47,000 miles and random white smoke puffs out for a few seconds then dissipates. Not just start up but anytime and not consistent. Nissan thought it was the catalytic converters and changed it but still it happens. My mr Janice can’t figure it out as the damn thing won’t do it when it in his shop and he’s been working on our cars for years, I totally trust him. Some posts say head gasket or rings issue, one forum even said a specific valve cover was to blame. I just bought this car...and I’m trying not to regret it as I love my platinum, it’s a great car but I’m thinking I might have to get rid of it and never buy a Nissan again. Please help me figure this out so I can keep my car 🙏🏼🙏🏼🙏&#x1f 3fc;
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post #8 of 9 Old Jul 9th, 2019, 06:22 PM
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Not mr Janice...my mechanic. Japanese Auto Specialists. He’s really good so I want to help him figure out what’s the issue with my car!!!!
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post #9 of 9 Old Jul 11th, 2019, 11:40 AM
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New Member with random white smoke from exhaust

Update- so my mechanic says the “smoke” we bagged and provided as well as the videos we showed him leads him to believe a small coolant leak is happening and that Nissan will most likely argue with us as to what the issue is and prob not be willing to rebuild or replace the engine so I might want to get out of the vehicle. I’m so upset. I really really liked the pathfinder platinum. First time I bought a car with all the bells and whistles I wanted, 360 cameras, heated and cooling seats, leather throughout and red! I love red. I’m so very upset this has happened and that Nissan sells a piece of crap like this. 47k miles which is young for a Japanese vehicle. I’m probably going to get out of the car, can’t imagine Nissan will stand by their power train warranty and actually fix the issue. So devastated!!
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