BlackoutZ

iTrader: (1)

I think im getting valve tick on my motor recently. Its a noticable metalic sound that increases as revs do. Does anybody have the same thing????

kcobean

iTrader: (2)

It's probably injector noise. I thought this same thing at one time. I asked about it at a local shop, and they confirmed that it was the injectors firing, not valve tap.

davidv

iTrader: (2)

a. Make sure you are using 91 plus octane gas.
b. Have you altered the timing?

Valve lash is a symptom of a worn out engine. I might expect to experience it at 150,000 miles.

platinum350

iTrader: (4)

I have complained at my Nissan dealership before about a valve tap, they said they didn't hear one. To me, it's exactly what it sounds like. I can really notice it when pulling up where a wall is next to me, for eg. like a going through a drive threw window. Anyone else notice this?

kcobean

iTrader: (2)

^ Yep. It's most likely injector noise. The injectors on this car are pretty loud. Check/change your oil, but beyond that, I wouldn't lose any sleep over it.

newzee

I had a similar noise esp. when the engine was under load. I got same suggestions about valve tap or injector pulsing or oil level, but I thought it was predetonation. Well the service techs at the dealership said they coulnd't reproduce the sound so I took the service manager for a spin and he said "yup, spark knock". Finally had them advance the timing 2 degrees (which is the maximum change + or - that the ecu will hold) and the noise is affectively gone. Don't know if that helps at all but I figure I'd put it out there.

platinum350

iTrader: (4)

Yea, I had a 3000gt a while ago and they had crazy tapping noises. My mechanic told me the same thing, not to worry about it. BTW Kcobean..love your Z.

BlackoutZ

iTrader: (1)

thanks for all the replys. My timing is advanced 2 degrees but i dont think that would effect it right???? its not even that much..

Cannysage

iTrader: (29)

I hear some weird tickish sound too.. just noticed it several days ago. Mine sounds like it's from the wheel area, though.

SchoolZin

I had valve ticking noise that progressively got worse over the course of a few months a few years back. The dealer actually ended up taking apart the passenger side of my valvetrain and found that one of the lifters was defective/ weak which was allowing the valve stem to puch a divet into the lifter itself. My Z is actually starting to do it now on the driver's side and just took it in to the dealer. I'm hoping they think I'm crazy and it's just the injectors, but I have a bad feeling that it's happening again.

BlackoutZ

iTrader: (1)

I never replied a long time ago but that is exactly what happened and nissan ended up replacing some lifters on the passenger side. Crazy

Justin@WestCovinaNissan

iTrader: (21)

Is it happening then the temps are higher? What viscosity oil are you using?

BlackoutZ

iTrader: (1)

It was happening all the time!!!!! It sounded like kaka

deprived...Not

I've tried to find information about this. When driving along in 6th at about 70mph, if I accelerate to pass, there is a slight rattling noise that I attribute to valves. Yes, I use 91 octane, and the dealer changed the oil about 500 miles ago. It's a 2006 with about 2200 miles on it. Do you think this is valves, something else or no problem?

Eazzy

iTrader: (8)

I had an 06 in the other day and I noticed it, but it was intermitent at idle, I wasnt conserned but curious.