Hey guys and girls. I own an 05z with 155k miles on it. Recently I started hearing noises when I turn the car on in the morning. It sounds like it's coming from the passenger side of the engine. I've done research but can't pin point on what the problem could be. Anyone had this problem already? I'm leaning towards engine knock but not too sure. Any advice, help? I have a sound video that I can try to upload our I can put it on YouTube so y'all can hear it. Please and thank you.

 

ask your dad to check the oil level

 

I respectfully ask the question: "What was the purpose of your snide response??" The OP posed a reasonable question that he has researched and yet is still unfamiliar with the possible issue. There is nothing wrong with that.

It is your type of remark that further diminishes the already declining signal:noise ratio on this forum.

If you are indeed the sage mechanic that your response seems to indicate that you think you are AND you can render an accurate e-diagnosis without actual hands on, then by all means, POST IT. Doing so in this manner gives everyone reading the thread information that they might be able to use in the future.

Negativity of the kind in your response benefits NO ONE. All it does is let everyone know that you really don't know the answer (and no one can without actual hands on the problem) and that you are merely arm chair quarterbacking and sniping from the comfort and anonymity behind your screen and keyboard.

If one has nothing to contribute to a thread, just don't say anything. If you do have info - even speculation - make your contribution worthwhile. Your response turns everyone off - new members, salty veterans, and everybody in between. The more positivity on the forum, the better it is for all.

Answer a question in the way you'd like to be responded to. With respect. You may indeed be a veteran, but you started at a point of unknowing as well.

Mic

 

We wont be able to help you with the information you provided. First, passenger side of engine is a pretty broad location. Are you saying the noise is internal (engine) or just in that area? If area, it can be anything from a loose heat shield, to worn out pulley, or engine mount. It can also be something simple, like the plenum rubbing on the strut bar. I say post a video and maybe we can help. Other than that, we need more information. Like: does the noise go away after start up? Do you hear it on cold starts only? Does the noise go away when the car is moving? Does the noise get louder when revving, etc.

 

Video.

Description is too broad. If you think it's that bad take it to a mechanic.

All engines make noise. Could be anything like said. Lifter tick is what my money is on. It's normal to a certain degree.

 

Is your check engine light on? And are you still able to drive your car or does it go away? Most people call me when they have Ticking, knocking or rocking sounds. And I tow their car to a mechanic or junk yard.

 

"Ask your dad to check the oil?"

Thanks for posting your comment...I'll be remembering your name so I completely ignore your posts.

Be an adult or find another playground.

Saved

 

You're only getting a knocking sound? No misfires?

Really you'll need to take it to a mechanic or the dealership for a free inspection. They can at least accurately diagnose it for you I'd think.

Hope this helps,

Saved

 

Instead of your dad checking the oil level did you check your oil level?

Is there a check engine light? Is it an rpm dependent noise?

 

If it lasts for a half second to a second and then disappears right when it fires, its probably the timing guides and tensioners. My 05 has started making a little rattle (if you can imagine the sound of a chain being pulled across an edge of something) for a split second on startup and im at 152k. it goes away after a second, but i imagine in 20000 more miles it will be time for a rebuild. I am just going to rebuild the whole assembly when i put the cams in.

 

Thanks, Mic for your well thought out, and well worded post. You and me, dcains and dkmura are turning this ship around.
If you cannot be positive, go watch espn and do not post here.

Mahalo Mic.
jc

 

You sir, give me hope that the world isn't traveling the path similar to Mike Judge's Idiocracy.

OP, I'll give my best e-diagnostic with a little more info on your situation

 

Sorry for the late reply, it sounds internal. During warn up it sounds like a diesel. After coming to full warm up it goes away but comes back for a few revolutions while driving. I haven't moved it for about 4 days because I'm afraid it's something serious and I haven't had time to put my hands on it. I'll put the video on YouTube and send y'all the link here in a few. I've done more research people day fuel dampers bit other say that's not it. I'll post up the video and link tho.

And thank you everyone that's willing to help out, I really appreciate it!!

 

350z engine noise:
That's what I'm getting, sorry for the bad graphics but that's the noise. I do have a CEL but because I have test pipes. And no misfires at all. No change in rpms while at idle either. I'ma drain the oil today to see if I have metal shavings or not. I'll keep y'all updated!! Much love guys!!

 

Can't diagnose but dayum, that sounds no bueno.

 

^^ lol doesn't make me feel any better..

 

Do you have a massive crack in your test pipe thats a pretty wierd sounding z. If you think its internal I would get it towed to a shop. It doesnt sound as bad as the jeep grand Cherokee I had when the connecting rod broke and the engine kept running for a short time. But it does sound more like a diesel then the 2013 cummins 6.7 that I drive all day.

 

he has the unicorn diesel 350. check for exhaust leaks

 

Exhaust leak can cause that noise? I'll reinstall the test pipes but I've been running with them for about 3 months no problem. My buddy has a g35 and he just started getting something similar like that.

 

if you cracked one, it could cause that sound