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3zz (nze/altis) engine rattling noise problem at start up

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rishi18
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3zz (nze/altis) engine rattling noise problem at start up

Postby rishi18 » February 16th, 2013, 11:29 pm

what your advice on how to fix this problem?:

- anytime the engine is cold, i hear a loud rattling noise for abt 1-3 seconds from the head of the engine. after that car works fine..

info i got is that its the timing chain belt thats the culprit. its not getting enough oil at startup to lubricate when in motion hence the rattling metal on metal noise.

some people tell me to change the tensioner, others say change the chain itself cuz it stretch, others say change the cam gear, others say change the chain guides,

i was thinking switching to a better oil, if dats it then wat is the best brand and type of oil to stop dat?

thanks with blessing for the response.

simplegreen
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby simplegreen » February 17th, 2013, 8:40 am

use a 5w oil and see how that works

rishi18
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby rishi18 » February 17th, 2013, 2:00 pm

castrol?

toyolink
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby toyolink » February 17th, 2013, 2:06 pm

May just be a sign of sludging which these engines have been showing quite frequently locally.
If this is the case,I would bet oil viscosity has been 'too heavy' coupled with protacted use of low end oil filters.
If this is not dealt with the need to repair engine could be in the very near future.
Get a repairer who understands these engines to determine problem quickly.

rishi18
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby rishi18 » February 17th, 2013, 5:59 pm

hey pal, i rebuilt the engine @ 195k km. abt 1 month ago... i thot the prob wud disappear but it didnt, prob since i used back the same parts (a piston was burnt and block wall scorched), the filter is sakura and the oil is shell 20w50 (140 a bottle).... wat to switch to? puralator and castrol syntec?

toyolink
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby toyolink » February 17th, 2013, 7:53 pm

The issues with this vehicle would be best established by of a proper assessment by a experienced mechanic in light of the new infor.
Is this the same vehicle in your other thread with tranny issues?
If this is the case you have some real 'wear and tear' consequences.
I am unable to understand a engine rebuild 'using back the same parts'.

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tte
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby tte » February 26th, 2013, 4:39 pm

The timing chain will usually make a constant ridiculous racket when its bad. I feel it may be the vvt timing gear. If it was the bottom end it would usually be because u have a worn bearing or a spun bearing and that would be like a jack hammer all the time. When u start take a listen by the left of the head by the bulge in the head cover and see if its around there. hope that helps.

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turbohead
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby turbohead » March 14th, 2013, 10:25 pm

schaffers 10w30 oil..

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V2NR 3.0
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby V2NR 3.0 » April 10th, 2013, 2:39 pm

rishi18 wrote:what your advice on how to fix this problem?:

- anytime the engine is cold, i hear a loud rattling noise for abt 1-3 seconds from the head of the engine. after that car works fine..

info i got is that its the timing chain belt thats the culprit. its not getting enough oil at startup to lubricate when in motion hence the rattling metal on metal noise.

some people tell me to change the tensioner, others say change the chain itself cuz it stretch, others say change the cam gear, others say change the chain guides,

i was thinking switching to a better oil, if dats it then wat is the best brand and type of oil to stop dat?

thanks with blessing for the response.


Good Afternoon, let not your heart be troubled. Simply change the engine oil you are using - I am almost sure you are using a 20/50w oil ? I had this exact same issue and changed to 10/30W oil which is the designed spec oil for the engine...

Mattonio1
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby Mattonio1 » February 22nd, 2015, 7:46 am

Changed oil yesterday from 20w-50 to 10w-30 and start it up this morning an
She didn't make a sound! Felling like a Boss! Thanks u Guys!

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ztune
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Re: 3zz (nze/altis) engine rattling noise problem at start u

Postby ztune » February 28th, 2015, 7:24 am

yep, oil. don't learn then hard way.

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