Question about 2002 Nissan Altima

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ON 2002 ALTIMA 2.5 I FOUND OIL IN ONE TUBE WHERE SPARK PLUG IS WHAT SEAL ON VALVE COVER OR PLUG TOP SEAL WOULD CAUSE THIS...CAR DOES NOT LEAK OR BURN OIL AT ALL

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I would try snugging down all the valve cover bolts before replacing anything. A valve cover gasket kit should have the grommets and gaskets necessary to repair this if you find no loose bolts.

Posted on Sep 27, 2009

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Oil leaked into the sparkplug tube from the round valve cover seal at the top of the tube. Replace valve cover gasket with spark plug tube seals and problem will be solved.

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I have a 2002 Nissan Altima 2.5L that is leaking oil into the spark plug tubes; can these seals be replaced or does the valve cover have to be replaced?


Yes, you need a Rocker cover (valve cover) Gasket kit. Remove the valve cover, remove all old O-rings and cover gasket, clean grooves and mating surfaces without gouging or scratching them, put the new gaskets on as per factory recommendations, tighten to the proper torque and you're done. The spark plug holes in the cover are part of the valve cover gasket kit. Any Napa, Car Quest, Pep Boys, Auto Zone will have it.

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We change the spark plug of my aveo 2004, and we found out that there is a oil leak on the third cylinder, what may cause the problem?


The valve cover has rubber o-ring seals that fit into the valve cover and seal oil out of the spark plug wells. Over time, they get hard and shrink, allowing oil to enter the plug wells from the top of the engine. You need to remove the valve cover and replace the valve cover gasket and o-ring seals. The seals should come with the valve cover gasket set.

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What would cause my 2001 nissan altima gxe to have oil in the plug cylinder ?? It's only in one and the plug is not oil fouled.


Most likely a worn ring or valve seal. You'll have to check the compression to be sure which problem it is. If the compression is normal then the seal is most likely leaking. If the compression is low then the ring is worn.

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Cause of oil in sparkplug tube?


1.your valve cover's spark plug chamber seal is leaking. Which requires removing the valve covers and replacing the gaskets and seals. 2. Excessive oil spills on to the valve cover and ignition coils when adding oil.

**This excess oil on the plug boots can cause the coils to short and eventually fail.

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Oil in spark plug well 02 nissan maxima what could cause this


On the DOHC: The Spark Plug Tube Seals (Washers) on the Valve Cover has developed a leak.
Install new seals.
Remove the Valve Cover to Install the Seals.
If the Valve Cover Gasket have not been replaced recently, go ahead and replace them as well, making sure you clean thoroughly BOTH surfaces before installing any new Seal Washers and Gasket.

Let me me know if this helped, or if you have additional information or questions. Feel Free to contact me on FixYa.com!

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If you need the Valve Cover Torque Sequence / Specs let me know on the Comment Section of this Post.

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Oil in 1 1997 chrysler lhs spark plug tube


although I am not familiar with this particular engine my son's Mazda Miata had oil in the plug holes and it only required a new valve cover gasket to fix it.

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Oil in the spark plug well on one plug/ back left


you are going to have to replace the valve cover gasket, the seal around the plug wells is leaking.

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I have an oil leak in a spark plug chamber how do is fix it


depends where the oil came from.of it has leaked down from a valve cover gasket,that is not hard to fix.if it a leaking valve seal that is expensive and if the head gasket is leaking,expensive.look at the outside edge of the valve cover,and check the edge for oil.if there is alot of oil,by the time the plug is unscrewed oil can go inside.the oil would burn off,so if there is oil inside it is dripping down probably from a valve seal.take off the valve cover and inspect the seals they are probably no good.there are 2 seal sets,one is in the valve cover,and that results in oil on the outside of the plug,and the actual valve seal which results in oil in the inside of the engine.

Jul 13, 2009 | 2002 Nissan Maxima

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