does the 07+ VQ35HR still suffer from the oil in spark plug?

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v36nspec
Posts: 5
Joined: Sun Nov 04, 2012 12:54 pm
Car: 2007 G35x sdn

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Just recently picked up an 07 g35x, coming away from an 03 350z. For those who did/do not know, G35's pre HR motor have notoriously known to have problems with oil seeping from inside the valve cover into the tubes isolating sparkplugs from the rest of the head and oiling system. Some worse than others, primarily cyl 6, and possibly cyl 5 are affected. Coil packs can become increasingly flooded with oil overtime potentially creating poor conductivity between coil and plug resulting in poor spark performance up to a non firing cylinder. I've searched around, found countless threads on this issue be it this website, alongside g35driver, and others... and it is a very well documented issue for V35's, but I couldn't find anyone posting issues specifically stating their v36 with this issue, I understand most of us also do not have enough miles on the clock, to warrant a spark plug change, although some may be close! rather than assuming and tearing apart my new purchase right away, is this common knowledge to anyone that the hr is not affected by the poor design of the de valve cover and grommets? Am I rid the oil submerged coil pack? Anyone have enough mileage on their 3.5 v36 clock, and did their own sparkplugs that could contribute?


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audtatious
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I didn't have issues with my 2k2 Maxima after 158k miles with oil in the tubes. Not saying it was not an issue with the VQ35DE but it's not something I had problems with. I have two G's that have had no issues in this aspect either, both of them are HR-style configuration.

Maybe I'm just lucky?

deschall
Posts: 4
Joined: Wed Oct 17, 2012 3:31 pm
Car: 2007 G35 Sedan

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I have an 07 g35 sedan with 104k and just changed my plugs. No 6 had some small amounts of oil in the head tube. It was not excessive but I guess the answer to your question is no you may not be done with that issue. I am not overly concerned and may get some oil made to help the engine seals in the future.
PS - I drive it like a sports sedan should be driven + higher speeds.

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gwoods
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127k miles on my 2007 VQ35HR I changed the plugs myself at 69k and 118k no oil either time.


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