2006 Murano spark plug change

[miloca1983]

S@$*t.... its my turn to do it!!. well with this post hopefully ill be able to do it. how come you used denso spark plugs on it? isnt that worse than using oem ngks spark plugs?


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[Carguy75]

Originally Posted by miloca1983

S@$*t.... its my turn to do it!!. well with this post hopefully ill be able to do it. how come you used denso spark plugs on it? isnt that worse than using oem ngks spark plugs?


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No. Denso iridium sparkplugs are the OEM plug for the newer Infiniti FX suvs. I choose Denso power because they are great plugs that have a fine electrode that produces a hotter spark than the old platinum-style plugs which Nissan do not use anymore in most of their cars now. Plus, the Denso plugs give the Murano about 2-3 mpg city more than it did before the change. P.S. the Denso Power iridium plugs are supposed to last about 100K miles or more. The Denso longlife iridium plugs are supposed to last 200K miles or more. That is why I chose Denso. P.S. again, the OEM NGK spark plug I replaced on my Murano had a cracked insulator around the electrode only after 90k miles. The picture posted above in section two-sparkplug change shows the NGK sparkplug with the cracked insulator next to the new Denso plug.

[miloca1983]

Originally Posted by Carguy75

No. Denso iridium sparkplugs are the OEM plug for the newer Infiniti FX suvs. I choose Denso power because they are great plugs that have a fine electrode that produces a hotter spark than the old platinum-style plugs which Nissan do not use anymore in most of their cars now. Plus, the Denso plugs give the Murano about 2-3 mpg city more than it did before the change. P.S. the Denso Power iridium plugs are supposed to last about 100K miles or more. The Denso longlife iridium plugs are supposed to last 200K miles or more. That is why I chose Denso. P.S. again, the OEM NGK spark plug I replaced on my Murano had a cracked insulator around the electrode only after 90k miles. The picture posted above in section two-sparkplug change shows the NGK sparkplug with the cracked insulator next to the new Denso plug.

aaaah. so you are having no issues so far with the spark plugs? cause if they are better than ngk then ill probaly purchase them instead


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[Carguy75]

Originally Posted by miloca1983

aaaah. so you are having no issues so far with the spark plugs? cause if they are better than ngk then ill probaly purchase them instead


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So far, i am not having any issues with the Denso Power plugs. The Murano seems to have better pick-up and I picked up some MPG's. I honestly cannot say that it is a better built plug than the NGK, but it performs better than the stock NGK plugs that was in it. However, NGK makes an iridium plug for the Murano also. So, I would go with what you like. I personally like iridium plugs that give the most power, if you do not want to change plugs ever again, i would get the long life iridium plugs from either NGK or Denso.

[Niwdeciluom]

I did the spark plug changed before and I found it on the other forum which was from a Nissan Altima 3.5SL all were pictured as well, I did the task for 3hrs. including breaks LOL!
I save a lot on this one.

[Carguy75]

Originally Posted by Niwdeciluom

I did the spark plug changed before and I found it on the other forum which was from a Nissan Altima 3.5SL all were pictured as well, I did the task for 3hrs. including breaks LOL!
I save a lot on this one.

Congrats. It is not hard to change the plugs, just time consuming with the extra parts that have to be removed. Did the guy with Altima have to remove the wiper assembly also?

[Warhammer]

More than likely. A lot of crap has to be removed so you can get under the upper intake plenum.

[jinhao]

i just did the job w/ NGKs identical to stock. worn out plugs vs new plugs is honestly what probably gave you the added power and gas mileage. your NGKs look like the ones I took out, the electrode was worn out and probably totally out of gap spec.

[srT4URBO]

What are new plugs suppose to be gapped at on the Murano? Sorry if it was mentioned and I missed it.

[njjoe]

Originally Posted by srT4URBO

What are new plugs suppose to be gapped at on the Murano? Sorry if it was mentioned and I missed it.

1.1mm or 0.043"

-njjoe

[dustmaker]

I've changed out several sets as well over the years. Some sets of plugs required the gap spec to be adjusted. These particular plugs were free floating inside of their little boxes. Not exactly what you want to see for something with such a precise spec. Even so, the plugs that came with those little plastic sheaths to protect the tips have always been at the correct gap spec.
Whilst on the topic of plugs, I've started my research for "the plug" to use, and they are all listed with different temps, different tips i.e: Copper (who, and why), Iridium, and "Double Iridium".
One more question: When replacing the manifold gasket, which tools should I use/attain (the perk of garage work), and are there any cautions or tips to pass on? Thanks yall!

[kingfisher]

Thanks for the valuable info here regarding plug changes, which my 2004 now needs. I'm going to have my mechanic do it with iridium plugs, as many here seem to like.

1. Any preference for NTK over DENSO?

2. Any other little pain-in-the-ass things that should be replaced while the intake assembly is removed? Things like oxygen sensor, etc. Things that would require the entire dis-assembly again to replace?

Also: opinions wanted on whether I should get new shocks just on principle after 115K miles.

Thanks

[Warhammer]

I wouldn't swap anything out unless you have to. Saves money.

If you need new plugs, just change those out. Keep it simple.

Read my thread, posted earlier in this thread, about how to swap out the plugs. Watch out for oil in the plug barrels!

[Carguy75]

The factory gap is .043in.

[HighNoon]

Do you need to remove any of these components to change the primary catalytic converters?