Help Rattling noise!!

ONLY for ADVANCED technical discussion about the 240sx!
abdow
Posts: 31
Joined: Thu Jan 03, 2008 10:34 am
Car: 1992 240SX

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i have a 92 hatch. couple months ago the car has been making a rattling noise coming from the engine. at first it was sort of quiet but now its really loud. the noise starts when i turn my car on and normally it would stop right after but now i just always hear it. i looked under the hood and the noise sounds like its coming from the engine but idk. sometimes when i start my car it it doesnt. i have to start couple times then it starts.


ELEMENT692121
Posts: 154
Joined: Wed Jan 23, 2008 3:59 pm
Car: 93 240 SX SE

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timing chain tensioners and or guides .. there prone to failure on the ka .. when you hear a rattle on a ka thats usually the culprit ..

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nisssan-drive
Posts: 187
Joined: Tue Nov 06, 2007 11:13 am
Car: 1993 240sx
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Could just be a heat shield rattling try taking them off to see if it still makes the noise, it very simple.

importdude
Posts: 81
Joined: Wed Feb 27, 2008 8:27 pm

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im having the same exact problemright after i switched back to stock cams and removed both guides


abdow
Posts: 31
Joined: Thu Jan 03, 2008 10:34 am
Car: 1992 240SX

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look at the picture. i marked where the rattling is coming from.

ps:this isnt my car.got the picture from google.

codyace
Posts: 1195
Joined: Tue Apr 26, 2005 7:22 am
Car: S14 w/redtop
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ELEMENT692121 wrote:timing chain tensioners and or guides .. there prone to failure on the ka .. when you hear a rattle on a ka thats usually the culprit ..
For sure. I can't even count how many Altimas and 240's that I've done this to!

777aaron
Posts: 149
Joined: Mon Aug 26, 2002 11:42 am
Car: race cars

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Trust us its the timing chain,we would'nt lead you astray in this cause we've all been through it before.Anybody who knows these cars knows this dreaded sound.

verSat1l3
Posts: 291
Joined: Mon Jul 09, 2007 7:59 am
Car: 93 S13 Fastback 96 S14 SE

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Yes its the timing chain guards. If you search the archived posts you will get hundreds of posts like this. Also I can tell you from personal experience that if you dont fix this, the guards will eventually snap off and cause some real damage to your motor.


abdow
Posts: 31
Joined: Thu Jan 03, 2008 10:34 am
Car: 1992 240SX

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what and how can i do that??

verSat1l3
Posts: 291
Joined: Mon Jul 09, 2007 7:59 am
Car: 93 S13 Fastback 96 S14 SE

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pull the valve cover and top timing chain cover. Remove the guards(not the tensioner) on the top timing chain. Throw them away. Replace the covers and drink beer.

If you need more specifics than that, download the manual which is linked to in my sig.

abdow
Posts: 31
Joined: Thu Jan 03, 2008 10:34 am
Car: 1992 240SX

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verSat1l3 wrote:pull the valve cover and top timing chain cover. Remove the guards(not the tensioner) on the top timing chain. Throw them away. Replace the covers and drink beer.

If you need more specifics than that, download the manual which is linked to in my sig.
ok i downloaded Engine Mechanical (EM). do i have to replace or revove the guard??

ps:i don't drink but I'll have a hot chocolate with you buddy.

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nissanpunkrock
Posts: 39
Joined: Sun Mar 02, 2008 6:38 am
Car: 95 240sx

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if its the timing chain guide it would do it all the time when you rev the motor and let off the gas the slack will slap the guild and you would here it

if it just does it when you start then quites sounds like its an oil pressure issuemy se-r did that and still does and it has 230000 miles started about 150000but may not be bad idea to check your oil pressure

my 2 cent

abdow
Posts: 31
Joined: Thu Jan 03, 2008 10:34 am
Car: 1992 240SX

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nissanpunkrock wrote:if its the timing chain guide it would do it all the time when you rev the motor and let off the gas the slack will slap the guild and you would here it

if it just does it when you start then quites sounds like its an oil pressure issuemy se-r did that and still does and it has 230000 miles started about 150000but may not be bad idea to check your oil pressure

my 2 cent
then it has to be timing chain guide

verSat1l3
Posts: 291
Joined: Mon Jul 09, 2007 7:59 am
Car: 93 S13 Fastback 96 S14 SE

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abdow wrote:ok i downloaded Engine Mechanical (EM). do i have to replace or revove the guard??
Just remove the guards and throw them away(upper chain ONLY), but you might consider replacing the tensioner. If you wanna go all out crazy you can replace the lower timing cover which would include the oil pump, but that'll be at least double the work. There's a lot of stuff to remove to go that route... I'd just do the guards and tensioner if you can get away with it.

Quote »ps:i don't drink but I'll have a hot chocolate with you buddy.[/quote]gah! kids these days...
Modified by verSat1l3 at 9:57 AM 3/27/2008

abdow
Posts: 31
Joined: Thu Jan 03, 2008 10:34 am
Car: 1992 240SX

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verSat1l3 wrote:
Just remove the guards and throw them away(upper chain ONLY), but you might consider replacing the tensioner. If you wanna go all out crazy you can replace the lower timing cover which would include the oil pump, but that'll be at least double the work. There's a lot of stuff to remove to go that route... I'd just do the guards and tensioner if you can get away with it.

gah! kids these days...

Modified by verSat1l3 at 9:57 AM 3/27/2008
i forgot to reply to this. i did what you said and that fixed it. thanks alot..


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