Bad sign of my KA/NA - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

patsilvia · 04-17-2008, 03:09 PM

Yesterday I posted about doing paint job on my lovely s14 96.
I was chilling and exciting to see her in nice paint, but heaven may be hate me.

While I was driving and about home I start hearing knocking sound from the engine. It is not usual knocking sound that you heard from almost every old car.
It is louder than that.

I took a v. clip and put in you tube.
This sound is really kill me; I'm really worried that my motor is done.
Engine oil is there, and regularly change with either Purple or Mobile 1.
I really hope that some of you heard and know what it is..

You Tube

Thanks in advance.
PS. I dropped my car at mechanic shop they said they don't know until
they start investigating, so I think It would be great if I had some idea what
is gonna happen including possible cost of fixing it.

verge513 · 04-18-2008, 06:31 AM

sounds like rod knock..but on the other hand sounds more of a timing issue..check the chain tensioners..cams..so on..pull the valve cover off and check things out...look at the cam lobs for wear

TheJerk · 04-19-2008, 03:12 PM

sounds like a timing chain tensioner, or guide.

2ilvia · 04-19-2008, 03:28 PM

is it a low knock or a higher pitched knock?
if it sounds like marbles in a can, thats the timing chain guide
a metal on metal thunk would be a rod

patsilvia · 04-20-2008, 12:35 PM

Thanks you everyone, your diagnose is right!
Yesterday I spent like 1.5 hr to remove the top chain guide
It is gone right away.
Really curious why the car chain just start rubbing,
it was there before without any noise for at least a year
since the car with me

Thanks

RiceKidd · 05-07-2008, 05:36 PM

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jPK}[l\o=
'tr8;e7iluksayrzxhcj.kv/bliN:O"P

*ms!3* · 05-07-2008, 05:42 PM

go ahead and remove the guide by the distributor. Its not needed either.

John_R · 05-07-2008, 11:48 PM

First thing I do to my 4 240s I've owned. Pull the valve cover and pull the freakin guide. There is no need for it and it breaks way too often. Out of the 6 motors I've owned 5 of them all had broken off guides on the upper chain.

Just something to think about. Oh yeah, and thanks Nissan!

Blown240sx · 05-11-2008, 06:46 PM

Im sorry but Im going to laugh at the people who said anything about knocking.

Mikey213 · 05-12-2008, 02:49 PM

Synthetic.oil.is.bad.for.old.NA/KAs

pr0ject TRUENO · 05-12-2008, 04:14 PM

Quote:

Originally Posted by Mikey213

Synthetic.oil.is.bad.for.old.NA/KAs

Let me guess...you have no proof whatsoever to back this claim do you

04-19-2008, 03:28 PM	#4
2ilvia Zilvia Addict Join Date: Sep 2006 Location: norhio Posts: 627 Trader Rating: (4)	is it a low knock or a higher pitched knock? if it sounds like marbles in a can, thats the timing chain guide a metal on metal thunk would be a rod __________________ S14- soon to be powered by 24v cummins- 450lbs tq

05-07-2008, 05:42 PM	#7
ms!3 Zilvia FREAK! Join Date: Apr 2006 Location: USA Age: 20 Posts: 1,378 Trader Rating: (5)	go ahead and remove the guide by the distributor. Its not needed either. __________________ http://wonvia.blogspot.com/

05-11-2008, 06:46 PM	#9
Blown240sx Leaky Injector Join Date: Feb 2007 Location: Are you stalkin me? Age: 25 Posts: 93 Trader Rating: (0)	Im sorry but Im going to laugh at the people who said anything about knocking. __________________ I am the Negative Rep Master

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04-18-2008, 06:31 AM	#2
verge513 Leaky Injector Join Date: Mar 2008 Location: memphis tn Age: 22 Posts: 54 Trader Rating: (0)	sounds like rod knock..but on the other hand sounds more of a timing issue..check the chain tensioners..cams..so on..pull the valve cover off and check things out...look at the cam lobs for wear

04-19-2008, 03:12 PM	#3
TheJerk Join Date: Oct 2007 Location: Where you wish you were Posts: 22 Trader Rating: (0)	sounds like a timing chain tensioner, or guide.

04-20-2008, 12:35 PM	#5
patsilvia Leaky Injector Join Date: Aug 2007 Location: san jose Posts: 80 Trader Rating: (0)	Thanks you everyone, your diagnose is right! Yesterday I spent like 1.5 hr to remove the top chain guide It is gone right away. Really curious why the car chain just start rubbing, it was there before without any noise for at least a year since the car with me Thanks

05-07-2008, 05:36 PM	#6
RiceKidd Join Date: Mar 2005 Location: San Mateo Posts: 37 Trader Rating: (0)	hxsysatehzjrxkclyuvibho jPK}[l\o= 'tr8;e7iluksayrzxhcj.kv/bliN:O"P

05-07-2008, 11:48 PM	#8
John_R Zilvia Member Join Date: Mar 2004 Location: Florida Posts: 166 Trader Rating: (0)	First thing I do to my 4 240s I've owned. Pull the valve cover and pull the freakin guide. There is no need for it and it breaks way too often. Out of the 6 motors I've owned 5 of them all had broken off guides on the upper chain. Just something to think about. Oh yeah, and thanks Nissan!

05-12-2008, 02:49 PM	#10
Mikey213 In time-out for misbehaving. Join Date: Oct 2007 Location: Los Angeles Age: 24 Posts: 210 Trader Rating: (0)	Synthetic.oil.is.bad.for.old.NA/KAs