bnrz

http://www.youtube.com/watch?v=2mqnazFpA9o

there is a distinct click as the engine rotates.

don't mind me ramming the camera into the engine bay. i put my ear closer and forgot i had a camera in my hand. good thing i didn't jam the lens.

anyway, what is it?! how to fix?

Goodspeed91

those are probably ur valves, mine has 172,xxx on the motor and sounds the same. My buddy has 210,00 on his and its whisper quiet. lmk if you figure it out.

bnrz

did he change his valves?
because by contrast it's the opposite of what i would think.

anyone else got an idea?
if it is of any consolation, my mpg is terrible. a wopping 19 mpg average.

njmaxseltd

iTrader: (19)

Perfectly normal sounding VQ.

99zx2

iTrader: (3)

didn't look at the vid. it's probably the injectors.

bnrz

well... the injectors COULD be creating spark knock?

eFLO

iTrader: (2)

my 99 181k mile vq sounded like that, so does my 97 with 119k miles. it's just the injectors as someone else mentioned.

99zx2

iTrader: (3)

why would you have a knock? what fuel do you use?

bnrz

i use the regular one.
would that make a difference if all my parts are in working order? i wouldn't think so...
if it calls for regular then the only thing creating knock would be over-compression or overheating. the vq30 doesn't have a compression ratio that would make 87oct selfdetonate. it could be bad injectors...
(i could be talking out of my butt, but that's my impression) someone correct me if i'm wrong... please!

99zx2

iTrader: (3)

nissan recommends premium fuel to be used. haven't check the vid yet, but if that's the injector noise, you shouldn't worry.

maxima 21

iTrader: (2)

The gas door reads premium fuel recomended for "BEST PERFORMANCE". I always run mid grade and my car does great.

luke95gxe

iTrader: (4)

thats fuel injectors the vq injectors just have a tapping noise mine does it also did it on my 95 motor and it does it now on the 97 motor thats in it

ef9

iTrader: (8)

I have that exact sound. I used a mechanics stethoscope and it sounds like the sound is coming from a valve. A friend of mine told me it could be the injectors and to use the stethoscope to probe all of the injectors.

Either valve tap, or injectors, depending where the sound originates from. Buy a stethoscope.

I'll check valve lash when I have the valve covers off.

Decimus Meridias

iTrader: (5)

Mine sounds the same. The clicking is definitely the injectors. I had one go bad (ran on 5 cylinders for a while). After replacing it it was good to hear the distinct click coming from that cylinder again.

bnrz

so wait...
after you replaced it, you still heard the click?

aackshun

iTrader: (3)

Clicking = Good, loud, working, injectors.

I've heard nothing out of order in that video.

bnrz

wow. you're actually the first person to say that... out of so many people.

*edit* oh didnt see the other posts lol

max ride 41

iTrader: (4)

thats what its supposed to sound like

supurman0805