i have been using 87 octane gas.. and now my car sounds like valves are clapping at around 2000 rpm... anyone ever had that. i started using higher octane, but i do not notice any real change.

i have about 40,000 miles on it

 

Don't use the cheap ****...

Dunno what kind of noise you're describing...can you record it and post the sound here? If you can't host, e-mail it to me, I'll host and link for you...

 

yea 93 around here is $2.17 a gallon. so its kinda hard now

 

Don't use 87 are you crazy
Only 93, its high here to but Im not about to kill my car with cheap gas.

 

I just filled up with 93 today. $2.07/gallon. Gas prices better go down!

 

i hear something from my engine too... it makes some sound like you throw coin in steel can... its crzy but i deal with it

 

I have a 2K2 with about 19,000 miles on it and I hear the same clattering noise around 2,000 RPM's. I use 93 or 94 Octane gas ALL the time and I still hear this noise.

 

Timing too far advanced?

 

The car is 100% stock. The timing has not been advanced.

 

haha, i saw high 1.70s - low 1.80s here for premium! Gas is cheaper in milwaukee and in the ghetto.

 

man who ever told you 87 gas was the sh*T to use should be shot, tied up and left for dead... now you have to get your injectors clean, and your fuel filter replace.... please dont used cheap gas even again........... this was a message from your friendly neighbor max Fanatic...

 

Premium is $1.50 here in GA

 

In San Diego we are paying 2.25 for premium 91... at arco

 

$1.48 at the local phillips 66. never fueled there but its the cheapest i've seen it in a long time. but yep average is 1.50. hooray no more 1.76 like a month ago.

 

anyone tried to bring it to nissan and have it checked out, about fuel injector cleaners, how exactly is it used and when, before you fill it up or after

 

Your motor is pinging/knocking!

 

If you can't afford 93 then you shouldn't be driving a Maxima!!!!