Valve cover rattle S14 SR20DET, PLEASE HELP - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

MangoDorifto · 06-06-2008, 02:22 PM

Quote:

Originally Posted by Mattlanta

This is bittersweet.

I have an S14 SR with the EXACT same noise, and it only happens on startup. As soon as I pull away, the noise is gone and won't come back until I shut the car down for at least a few minutes and start it back up. After reading all the comments on here, I do also notice some of the same noise on decel, if the conditions are just right; medium-heavy decel load, usually 3rd or 4th gear.

Car runs strong though, but it was making me crazy not knowing what this mystery noise is. I hate that everyone has to deal with this, but I'm glad you all shared your experience cause now I know what I need to do to make it go away!!!

One question... should I do the sproket first, then the solonoid, or the other way around, or both at one??? I'm not sure what's involved.

Thanks!

Yup, thats how it starts. Then it'll get progressively worse. It goes from what you described to being constant rattling no matter what you do.

Just change the sprocket, I really don't think theres a need for both. The sprocket is supposed to be a sealed unit but the only thing holding mine together was the large bolt and washer. The second I loosened that bolt and backed it out, the whole assembly exploded into multiple peices and fall apart in my hands. I playyed with the gears inside and you can see the wear and tear from the rattling.

*xxchurroxx* · 06-06-2008, 07:08 PM

Quote:

Originally Posted by MangoDorifto

Yup, thats how it starts. Then it'll get progressively worse. It goes from what you described to being constant rattling no matter what you do.

Just change the sprocket, I really don't think theres a need for both. The sprocket is supposed to be a sealed unit but the only thing holding mine together was the large bolt and washer. The second I loosened that bolt and backed it out, the whole assembly exploded into multiple peices and fall apart in my hands. I playyed with the gears inside and you can see the wear and tear from the rattling.

wooo. i'm so glad to hear that. and thanks for posting the pics.

that rattle gets REALLY bad after a while

just received my sprocket from RHDjapan for a whopping 5 bills almost and waited about a month to get it. so you just reassured me that this should be the definite problem. i had already replaced lifters/tensioner and have been reading posts on how replacing sprocket didn't work for anyone.

i'll post if my attempt is successful!

wookieballa · 06-06-2008, 10:02 PM

bleed your lifters, it will help a TON!!! might still tick on start-up, but should go away relatively quickly. i also had the same problem, and this made a huge difference.

singlecamslam · 06-06-2008, 10:38 PM

my oil light stays on for like 2 seconds after start up, is this bad? it doesnt make any noise, runs super smooth, but i just noticed that the light doesnt come off as soon as all the other dummy lights. I'm gonna have an oil pressure gauge installed soon. Car currently hasnt been ran a little over a month, is it safe to start it and go? i dont think thats long enough to cause harm.

stillen · 06-06-2008, 11:08 PM

If you have the noise I have at the top of this thread, then nothing works. Nobody has come up with the solution. If you are talking about the diesel truck noise like the youtube video, then you just have to replace the camsprocket.

WoolyS14DET · 06-07-2008, 01:53 PM

Quote:

Originally Posted by stillen

If you have the noise I have at the top of this thread, then nothing works. Nobody has come up with the solution. If you are talking about the diesel truck noise like the youtube video, then you just have to replace the camsprocket.

What oil are you using ?? what weight ?? I had a similar issue and i switiched to a thicker oil and it went away !! Im running 10w30 Quakerstate syn.

Pho Man · 06-07-2008, 11:23 PM

I have the exact same problem with my S14 SR. I had it checked out and one shop told me that it was my lifters. Since hearing that video clip it's the exact same way with my car, right down to the T. If I had someway of posting my video of the problem I'd do it. Two long years and I finially found out what it is!

Pho Man · 06-07-2008, 11:32 PM

Quote:

Originally Posted by s0apgun

sounds like timing chain rattle had it on my s14

But if it would be the timing chain, it should be rattling all the time.

stillen · 06-10-2008, 12:17 AM

I run 10w30 shell. I tried 10w40 and it didn't work. I also tried the lucas engine treatment and it didn't work. I don't use synthetic.

WoolyS14DET · 06-10-2008, 11:11 AM

Hummm !! I think you need a new VTC sprocket !! Mine dosen't make a sound and it came out of an automatic car and it runs great. Im boosting 15 lbs on low boost.

stillen · 06-10-2008, 11:19 AM

Please read my initial post on this thread. I have changed it with 3 sprockets, 2 came out of cars that don't make the sound. Brand new Timing chain tensioner was placed with no fix, camshafts changed with no fix, VTC solenoid changed with 4 different ones with no fix. Please don't mix up my sound with the one from youtube. The one from youtube that sounds like a diesel truck gets fixed with a new sprocket.

WoolyS14DET · 06-10-2008, 11:27 AM

Did you replace the lifters ?? And if so did you let them soak in oil and bleed them before you put them in??

*drftmark* · 06-10-2008, 11:28 AM

I used to have that problem.

Then I bought HKS non vtc cams.

Fixed everything.

Plus its cheaper than anyone of the VTC parts.

steve shadows · 06-10-2008, 11:28 AM

Quote:

Originally Posted by stillen

It is related to the VTC solenoid. When it is disconnected, there is no sound. We changed that, we also changed the cam and we also changed the sprocket, all taken from an engine that doesn't make that sound. All that didn't correct it.

What ecu do you have?

It sounds like VTC is kicking over way way too early.

DO you have the proper ecu? Is it re-tuned, stock, if it's stock is it exactly right for your motor?

Sounds like the settings for VTC kick over are way too early ( you can control the kick over point with ems like power fc and haltech)

tr_racing · 06-10-2008, 12:41 PM

Quote:

Originally Posted by steve shadows

What ecu do you have?

It sounds like VTC is kicking over way way too early.

DO you have the proper ecu? Is it re-tuned, stock, if it's stock is it exactly right for your motor?

Sounds like the settings for VTC kick over are way too early ( you can control the kick over point with ems like power fc and haltech)

I have this probleme with a S15 SR20 (new cams, spring, retainer, HG) & just put a Power FC D-Jetro.

So it's just the setting of the VTC?

Kevin..

stillen · 06-10-2008, 11:24 PM

No the VTC kicks in the right time as in the silvia repair manual for s14 sr20det which is 1050rpm. I am using stock ECU. We have tried 2 different ECU's and no difference.

*fliprayzin240sx* · 06-11-2008, 12:34 PM

Just get rid of it...problem solved...

WoolyS14DET · 06-11-2008, 12:51 PM

Did you replace the lifters ?? And if so did you let them soak in oil and bleed them before you put them in??

???? Well any answer for this ????

Erjay1 · 08-15-2008, 09:11 AM

The youtube video and and OP's video both have the same problem. Only difference is where the youtube video is probably the worst that the VTC sound can get and the OP's is still only at low rpm's. Same sound, same problem. My car does the same thing when you give it gas, sounds exactly like the OP's video. Just remove the VTC. Get adjustable cam gears. Good excuse to swap out for some better cams too.

270R · 08-16-2008, 11:30 PM

has anyone heard on nismo adjustible cam sprockets for the s14 sr? cuz this dude at cerritos nissan says he can get me some. he says they retain the vtc funtion and there adjustible. BUT hes just a parts dude.. any second opinions?

WoolyS14DET · 08-17-2008, 12:59 AM

Quote:

Originally Posted by 270R

has anyone heard on nismo adjustible cam sprockets for the s14 sr? cuz this dude at cerritos nissan says he can get me some. he says they retain the vtc funtion and there adjustible. BUT hes just a parts dude.. any second opinions?

Nismo does not make adjustable cam gears !!! You don't need and adjustable cam gear for the intake cam -----hence the VVL/VTC function. You would only want and adjustable cam gear on the exhaust side and would want to advance it about 2-3 deg depending on what cams your using to help promote the "scavenging" effect. The guy at cerritos nissan is a "DONKY" !!!

270R · 08-17-2008, 11:55 AM

Quote:

Originally Posted by WoolyS14DET

Nismo does not make adjustable cam gears !!! You don't need and adjustable cam gear for the intake cam -----hence the VVL/VTC function. You would only want and adjustable cam gear on the exhaust side and would want to advance it about 2-3 deg depending on what cams your using to help promote the "scavenging" effect. The guy at cerritos nissan is a "DONKY" !!!

hey thanks... the guy really is a donky lol....

duffi · 11-03-2009, 04:36 AM

hello people, i allso have vvt rattle on my s14
i am little lasy to act, but before of buying of new or used sprocket, i am curious does someone, somewhere tried to repair vtc sprocket
not to weld it, not to dig it... to make it work

what is cause of rattle sound at all?

i know that alfa, and some other car manufacturers have repair kits for their sprockets
does the nissan have something simillar?

there must be some cheaper DIY solution, because this is common problem of all sr20det owners all over the world

06-06-2008, 10:38 PM	#34
singlecamslam Zilvia FREAK! Join Date: Apr 2008 Location: Norcal Posts: 1,092 Trader Rating: (5)	my oil light stays on for like 2 seconds after start up, is this bad? it doesnt make any noise, runs super smooth, but i just noticed that the light doesnt come off as soon as all the other dummy lights. I'm gonna have an oil pressure gauge installed soon. Car currently hasnt been ran a little over a month, is it safe to start it and go? i dont think thats long enough to cause harm. __________________ WTB s13 side skirts.

06-11-2008, 12:34 PM	#47
fliprayzin240sx SLINKY + ESCULATOR = Fun Times Join Date: Aug 2002 Location: Ass Crack of Japan Posts: 8,413 Trader Rating: (5) Rides Gallery: fliprayzin240sx	Just get rid of it...problem solved... __________________

08-16-2008, 11:30 PM	#50
270R Zilvia Junkie Join Date: Jul 2002 Location: Bell gardens ca Age: 24 Posts: 308 Trader Rating: (0)	vtc cam sproket has anyone heard on nismo adjustible cam sprockets for the s14 sr? cuz this dude at cerritos nissan says he can get me some. he says they retain the vtc funtion and there adjustible. BUT hes just a parts dude.. any second opinions?

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06-06-2008, 10:02 PM	#33
wookieballa Leaky Injector Join Date: Jan 2007 Location: goldsboro Age: 34 Posts: 87 Trader Rating: (0)	bleed your lifters, it will help a TON!!! might still tick on start-up, but should go away relatively quickly. i also had the same problem, and this made a huge difference.

06-06-2008, 11:08 PM	#35
stillen Join Date: Dec 2006 Location: NY Posts: 51 Trader Rating: (0)	If you have the noise I have at the top of this thread, then nothing works. Nobody has come up with the solution. If you are talking about the diesel truck noise like the youtube video, then you just have to replace the camsprocket.

06-07-2008, 11:23 PM	#37
Pho Man Leaky Injector Join Date: Jun 2008 Location: Pennsylvania Age: 27 Posts: 110 Trader Rating: (0)	I have the exact same problem with my S14 SR. I had it checked out and one shop told me that it was my lifters. Since hearing that video clip it's the exact same way with my car, right down to the T. If I had someway of posting my video of the problem I'd do it. Two long years and I finially found out what it is!

06-10-2008, 12:17 AM	#39
stillen Join Date: Dec 2006 Location: NY Posts: 51 Trader Rating: (0)	I run 10w30 shell. I tried 10w40 and it didn't work. I also tried the lucas engine treatment and it didn't work. I don't use synthetic.

06-10-2008, 11:11 AM	#40
WoolyS14DET Zilvia FREAK! Join Date: Mar 2008 Location: Long Island, NY Age: 30 Posts: 1,129 Trader Rating: (16)	Hummm !! I think you need a new VTC sprocket !! Mine dosen't make a sound and it came out of an automatic car and it runs great. Im boosting 15 lbs on low boost.

06-10-2008, 11:19 AM	#41
stillen Join Date: Dec 2006 Location: NY Posts: 51 Trader Rating: (0)	Please read my initial post on this thread. I have changed it with 3 sprockets, 2 came out of cars that don't make the sound. Brand new Timing chain tensioner was placed with no fix, camshafts changed with no fix, VTC solenoid changed with 4 different ones with no fix. Please don't mix up my sound with the one from youtube. The one from youtube that sounds like a diesel truck gets fixed with a new sprocket.

06-10-2008, 11:27 AM	#42
WoolyS14DET Zilvia FREAK! Join Date: Mar 2008 Location: Long Island, NY Age: 30 Posts: 1,129 Trader Rating: (16)	Did you replace the lifters ?? And if so did you let them soak in oil and bleed them before you put them in??

06-10-2008, 11:28 AM	#43
drftmark Premium Member Join Date: Nov 2005 Location: tx Posts: 415 Trader Rating: (0)	I used to have that problem. Then I bought HKS non vtc cams. Fixed everything. Plus its cheaper than anyone of the VTC parts.

06-10-2008, 11:24 PM	#46
stillen Join Date: Dec 2006 Location: NY Posts: 51 Trader Rating: (0)	No the VTC kicks in the right time as in the silvia repair manual for s14 sr20det which is 1050rpm. I am using stock ECU. We have tried 2 different ECU's and no difference.

06-11-2008, 12:51 PM	#48
WoolyS14DET Zilvia FREAK! Join Date: Mar 2008 Location: Long Island, NY Age: 30 Posts: 1,129 Trader Rating: (16)	Did you replace the lifters ?? And if so did you let them soak in oil and bleed them before you put them in?? ???? Well any answer for this ????

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08-15-2008, 09:11 AM	#49
Erjay1 Zilvia Junkie Join Date: Apr 2008 Location: Los Angeles Age: 24 Posts: 457 Trader Rating: (2)	The youtube video and and OP's video both have the same problem. Only difference is where the youtube video is probably the worst that the VTC sound can get and the OP's is still only at low rpm's. Same sound, same problem. My car does the same thing when you give it gas, sounds exactly like the OP's video. Just remove the VTC. Get adjustable cam gears. Good excuse to swap out for some better cams too.

11-03-2009, 04:36 AM	#53
duffi Join Date: Sep 2009 Location: Serbia Age: 29 Posts: 1 Trader Rating: (0)	hello people, i allso have vvt rattle on my s14 i am little lasy to act, but before of buying of new or used sprocket, i am curious does someone, somewhere tried to repair vtc sprocket not to weld it, not to dig it... to make it work what is cause of rattle sound at all? i know that alfa, and some other car manufacturers have repair kits for their sprockets does the nissan have something simillar? there must be some cheaper DIY solution, because this is common problem of all sr20det owners all over the world