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ticking noise from engine

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Old 03-22-2007, 08:59 PM   #1
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ticking noise from engine

hey guys,

Now im not sure if its just the 2 4th gens ive owned or not. But do all of you guys have noisy injectors? Mine are super loud, ill get a video of it. But its like all you hear, ive used a ste thoscope, and against my injectors it sounds like 6 jackhammers going.

Now im pretty sure its coming from the injectors, but i suppose it could be coming from the valvetrain? Im doing my valve covers soon, so i figure if i have them off, i can check/adjust anything to do with valvetrain.


thanks
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Old 03-22-2007, 09:14 PM   #2
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Mine are the same.
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Old 03-22-2007, 09:46 PM   #3
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oh alright, so naturally there that loud? My 5.5 gen you cant even hear the injectors while its running. everyone comments on how loud my "lifters" are. when i tell them its my injectors they seem confused lol..
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Old 03-22-2007, 09:50 PM   #4
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I can't hear my 03 either. some A32's are louder than others. I agree on the 'lifters' comment.
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Old 03-22-2007, 09:52 PM   #5
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consider loud injectors to be a sign that they are working properly. when they get gummed up and stuck they get quiet -- not what you want.... I love the sound of my injectors.
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Old 03-22-2007, 09:57 PM   #6
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heh, its a sound ive gotten more and more use to in time. It really bothered me when i first got the car, coming from a honda accord which only made noise just before it was about to die it was kinda weird. Im curious if the 5th gens(VQ30DEK) have the loud injectors too? I havent really listened to one up close or paid enough attention to one.
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Old 03-22-2007, 10:32 PM   #7
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i think what you hearing is the lifters
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Old 03-22-2007, 10:40 PM   #8
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its nearly impossible to describe a sound since it is a movement of air and the reactions of ones ear drums which send the signal to the brain via the nervous system...thus is it equally as impossible to diagnose what he is hearing (never the less the imperfections of the ear it self and the personal identity of a human being's ear)

Sorry but this thread is worthless without an audio clip!
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Old 03-22-2007, 10:48 PM   #9
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naahhh. if you put an s-scope to an injector there is absolutely no mistaking the sound it makes. nobody could mistake that for a lifter. even if you don't know what a lifter sounds like, you can absolutely pinpoint to origin of the injector noise. he is hearing the injector, no question.
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Old 03-23-2007, 06:56 AM   #10
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Quote:
Originally Posted by sky jumper
naahhh. if you put an s-scope to an injector there is absolutely no mistaking the sound it makes. nobody could mistake that for a lifter. even if you don't know what a lifter sounds like, you can absolutely pinpoint to origin of the injector noise. he is hearing the injector, no question.
It has a nice rhythm too.
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Old 03-23-2007, 07:14 AM   #11
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i have a ticking noise which ive heard in other max's before so i figured it was somewhat normal. its decently loud sometimes but other times its pretty faint. never thought it might be the injectors...good call. now i wont be worried so much about it. haha
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Old 03-23-2007, 10:36 AM   #12
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yeah i have noticed that about my car i can hear them with the hood closed if im 5 feet form the vehicle... if im inside the car i dont hear it though... its deff injectors and since everyone seems to have this im not too worried about it:P
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Old 03-23-2007, 12:10 PM   #13
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Im not sure if its the same thing as he's talking about, but my 96 makes a ticking noise after its turned off after ive driven it. it just does one tick ever second or two. not sure what it is. ill get an audio clip and post it today if i can.
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Old 03-23-2007, 12:19 PM   #14
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tranny/engine cooling?
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Old 03-23-2007, 12:26 PM   #15
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could be i guess, do any of your guys' cars make a noise like that after you shut it down?
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Old 03-23-2007, 12:47 PM   #16
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i'm pretty sure that it's just the sound of oil/atf dripping back into the pan
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Old 03-23-2007, 01:27 PM   #17
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yeah the sentra did that 2. its probably just the cooling/contracting of metal parts which is nothing big... the sentra did it since day one and its been running 4 years now with one major accident and no other problems arose
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Old 03-23-2007, 01:37 PM   #18
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Some of the suggestions as to what the noise might be.....
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Old 03-23-2007, 01:44 PM   #19
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Quote:
Originally Posted by JasonR107
Im not sure if its the same thing as he's talking about, but my 96 makes a ticking noise after its turned off after ive driven it. it just does one tick ever second or two. not sure what it is. ill get an audio clip and post it today if i can.
have you ever driven any other car, ever?

edit: ok, fine. parts are cooling/contracting at different rates, and every "tick" you hear is something adjusting itself ever so slightly due to the different rates of contraction.
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Old 03-23-2007, 02:56 PM   #20
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yes i have, driven other cars, but they were automatics, ive never had a car that did this before. heh, my previous car was a 94' oldsmobile cutlass ciera, lol.
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Old 03-23-2007, 06:06 PM   #21
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My old 95 max used to make that constant ticking noise at startup, but after is got warm it stopped. In my 97 it doens't have that issue though.

and in my old 95 you could hear that tick sound after it turned off, but in my 97 it doesn't or i don't notice it.
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Old 03-23-2007, 06:21 PM   #22
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That sound is not the sound we're talking about.
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Old 03-23-2007, 06:49 PM   #23
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I didn't think overhead cam cars even had lifters, don't the cam lobes act directly on the valve tips?
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Old 03-24-2007, 03:27 AM   #24
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i hear a rattling noise when i start my car up, but i only hear it from the outside it sound to me like something is loose or a fan belt or something to that nature.
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Old 03-24-2007, 08:34 AM   #25
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Quote:
Originally Posted by MadMaxSE-L
I didn't think overhead cam cars even had lifters, don't the cam lobes act directly on the valve tips?
It depends. Some OHC engines use rocker arms to actuate the valves. Ours is a direct-acting shim-under-bucket/bucket tappet design so no, our engines don't have "lifters", per se.
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Old 04-15-2010, 06:54 PM   #26
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I've been trying everything to stop my 95 maxima to stop ticking. I'm about to give up. Not sure i believe it's the injectors... I'm leaning towards tc tensioner. If anybody knows how to stop the noise please let me know.
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Old 04-15-2010, 08:42 PM   #27
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my motor ticks too. sometimes it seems loud n other times i could barely hear it. i want to replace my motor soon with a vq35 maybe.
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Old 06-05-2010, 01:06 AM   #28
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First check your injectors to make sure they meet factory spec then use seafaom. about 1/4 can through the intake method. then the rest of bottle (about 10oz) into the gastank when fuel gauage reads half full. then shake car/bounce it up and down or whatever to mix the gas and seafoam. then start car and go for a short drive( just enough to get the seafoam/gas mixure through fuel lines and into the injectors and engine. Mine was ticking b4 but not anymore
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Old 06-05-2010, 11:14 AM   #29
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nissans are very very famous for having the noisiest after shut off sound in the world.

Dating from the 80s. Its the heat sheild, catalytic converter

Metal that changes shape and ticks as its closing down


Mazdas also, world famous.

Ive got three nissans right now they all do it.

Nissan trucks, super super load . it sounds like the sound is coming from the radiator but its actually the heat shielding under the engine and around the cat.

Im sure theres over 500 threads on this forum about it I dont have to look. Ive had five nissans for 84-98 now and they all did it.
Very worst is my 89 truck . My 84 200sx was terrible about it too. It was worse in the 80s I believe, I had two 80s nissans and 3 90s nissans.

my 97 sentra is the least noisy i dont think I ever really noticed it it was the exception. you can hear it definitely its just the same as most cars imo. this i30 is a very loud shut of noise ager.

Last edited by stamar; 06-05-2010 at 11:26 AM.
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Old 06-05-2010, 11:28 AM   #30
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I'm guessing you mean this sound from this video.
http://www.youtube.com/watch?v=OE4KjiY-bfQ

That is normal. If it sound worse than that like a knocking sound then you have a problem. Other than that you should be ok.
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