Changed plugs tonight. My VQ40 just rolled past 170K. I changed them the first time early around 70K. Factory spec is 105K miles. These are factory spec NGK Iridium plugs. Same thing went back in - purchased from RA.
One of the boots came out broken. I have had this issue before. There is one plug directly under the intake manifold, Nissan says to remove the manifold, but I have now done this 5 times on VQ40's without removing the manifold - but it seems this is the risk you run. Strangely...
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One of the boots came out broken. I have had this issue before. There is one plug directly under the intake manifold, Nissan says to remove the manifold, but I have now done this 5 times on VQ40's without removing the manifold - but it seems this is the risk you run. Strangely...
Read more