NF Mod/Nissan Master Tech
Joined: Jan 2006
Location: Prospect, VA
The knock sensor is likely the result of the problem, not the cause. It could be dumping fuel, so I would check the fuel pressure. Sometimes on the VG engines, the vacuum hose to the fuel pressure regulator, which is on the back side of the engine, splits and falls off, which cause the fuel pressure to be run at full pump pressure, creating a rich condition. In the future, you're best to post your problem in the Frontier section, rather than tag onto a six year old thread in the Altima/Stanza section.
Last edited by smj999smj; May 17th, 2016 at 08:55 PM.