valve noise/ timing

[angel0909]

I am having a problem with my nissan murano 2004..I can hear my valves when I accelerate the engine on drive not in neutral. I use 93 octane all the time and from different station. I have given it a tune up and still the valves knock driving fast and even slow ....Not all the time it stops for about one or two days then back..its driving me nuts....had a mechanic check the electrical and all the sensors on his diagnostic system.. the only thing he saw was that the timing changed from 14 to 16 from time to time but he only recommend replacing the spark plus....anybody out there have any idea what's happening...
ps first start gas smell is strong.

[Jalcon]

Might want to repost this in either the "1st gen" or the "problems" sections.

[angel0909]

thanks will do

[msyvette]

ok im having the same problem with my '05 murano. the dragging noise like i dont have enuff oil in my car. it started after i got the oil change. i drove it myrtle beach for memorial weekend and i had put an quart in that morn b/c i didnt want to be w/o oil......it has not helped. so what is this sensor i see everyone speaking of? couple of other issues also............less than 80k mi.

thanks for helping.
yvette

[angel0909]

look into 1 gen murrano foram about knock sensor