I just got my car a few weeks ago, it has 900 miles on it. I just noticed it today, but its really cold out also today for the first time, I drove from my house to a friends and when I got there I opened the door and heard a clicking coming from the drivers side (seems that way atleast) and I sat and revved the motor a lil (idle to 1300ish) and it was getting faster when the engine was being revved. The car was a dealertrade and had 90 miles when it got to me from Naples. The car doesnt have a check engine light on or anything. I havnt revved past 5K RPMs either. I havnt ever heard a noise like this, at first I thought it was rodknock but it is pretty friggin loud, I could hear it from the driveway when I was about 25 feet away. Is it maybe a loose heatshield or something? Sorry if this is a common thing with Zs, I searched but couldnt really find anything.

 

Could be the injectors opening and closing.

 

take it back to the dealer and let them know the problem first thing in the morning if i was you. This is not a common thing in any Z.

 

Ugh, I really hope this doesnt turn out to be some huge problem...

 

It's probably just the injectors... I thought the clicking was a little loud the first time I went through a drive through... the injectors are more noticeable on the Z than a lot of other rigs.

 

I hope so, Im taking the car in for an oil change tommorow so I guess ill let them look at it then.

 

hope its nothing serious

 

Could this maybe be a heatshield thats loose? The more I listen to it the more it seems to sound like a loose heatshield, if I rev it there is a metal "tink" right before the engine starts to rev...

 

Its disappointing to see that there was no follow up with these types of problems. I'm having the same problem with my engine clicking loud when you start the car. Sounds like its coming from the top of the engine? When the engine gets warmed up, you can't hear it anymore.
I'm search though old post to see if there was anyone else with this problem but most of them end like this? No resolution?

 

OK, I called the dealer and they also said it is most likely the injectors. Damn there loud

 

i think i have the same "problem" but its when i depress and let go of my clutch in neutral... when im completely stopped in neutral and i let go of the clutch, i hear a small chattering noise, when i depress the clutch all the way, the chattering noise goes away. i h ave 06 enthusiast now with 5500 miles.

 

I have the same problem did you ever get yours fixed?

 

i have the same problem...seems to be when it is cold and louder when i put the car in gear from park....i have an auto. let us know what you find out.

 

i bought mine used, 75k and no noises whatsoever, hope you get it straightened out!

 

the clutch noise is the throwout bearing, a lot of them chatter, mine does too never really bothered me though. just another noise that this car makes. Seems like it has a new one at least once a month

 

mine also has a clicking noise once in a while, like a valve or something, goes away when its warm. I also searched with no luck.

 

i believe the Z has Hydrolic lifter's and in morning starts or colder weather when you 1st start the car some may take a few to fill up, which will create that engine clicking noise. .if it doesn't go away after the car warms up or in a few minutes then check the dip stick, although the readings never really right. .but add a little oil and see if it stops the click noise. .if not. .take a long metal something like a screw driver and place it on the injector and put your ear to it and listen threw the driver the noise. .keep doing this around the engine until you pinpoint where the noise is coming from internally. .then that should give you your answer. .
worst case it's one of your timing chain adjuster's. .i've had that happen to someones Z already. .

or i've found a TSB that im uploading in a few for you guys!

 

TSB FOR passenger side clicking noise in engine bay~~

 

i dont guess this will help much but if you have a cold air intake that could be it

my nismo intake taps the area just below where the strut bar bolts up

hope you get it fixed

 

When you depress the clutch to gear box do not turne, when you let it go, you can ear the engine buging down lightly, about 50rpm, as it start to turn the gears in you trani.