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Installed a k n air filter and now as light knocking noise at idle 2005 exterra 4.0 v6 oil is good need help?
Wiki User
∙ 17y ago
I had the same problem when I cleaned and replaced my KN filter after 3 months of use. It was caused by too much oil on the filter element. It fowls the knocking sensor on the engine and causes the knocking noise at idle. I removed the filter and cleaned it. Then I very lightly oiled it and replaced it. The knocking went away in about a week. If it doesn't, you might have to replace the sensor. I'm not a mechanic... this is all the help I can give you. Good luck!
Wiki User
∙ 17y ago
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