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evorock Profile
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Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
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Re: Timing Chain service/Replacement.


All really valid points and make sense. I guess my tensioner is just a stubborn one, cause theres no way a pin that small and short would hold mine in [sign in to see URL] well,maybe mine has been replaced with a different one in its life sometime.
There are soo many fault finding possibilities on engines and I really enjoy learning these things.

---
2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
28/Jul/2011, 11:05 pm Link to this post Send Email PM   Send Private Message Blog
 
jacksback Profile
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Date Registered: 05-2011
TOTAL POSTS: 14
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Hi all, Need advice from anyone who has done the unthinkable and dropped the tensioner piston in the engine. It sounded like it went to the bottom so took off the bottom oil pan and no luck. Have been all around the timing chain area as far as could tell from photos of the inside and feel confident that if it was there I would have been able to extract it with a magnetic pick up tool, feeding it from the top, but also from the bottom. (I fashioned a small headed one onto brass wire so could bend around corners.) Also checked over the top of the Balancer Unit but not sure if there are any holes at the top for the piston to fall into. Has anyone successfully removed one this way? or if you removed the timing cover, where was the piston located. Any help would be appreciated as am not looking forward to removing timing cover and all that is involved with doing so.
29/Jul/2012, 6:57 pm Link to this post Send Email PM   Send Private Message Blog
 
evorock Profile
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Date Registered: 12-2010
Location: Rockingham,Perth WA
TOTAL POSTS: 146
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Re: Timing Chain service/Replacement.


Have made contact with Jacksback to above and discussing the options with him. Fingers crossed.

---
2002 T30 Xtrail Ti , White 5Sp
Full engine rebuild, Single Mass flywheel upgrade,
Scott, Rockingham, Perth WA
31/Jul/2012, 7:17 pm Link to this post Send Email PM   Send Private Message Blog
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 28932
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Re:


Thanks Scott emoticon

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31/Jul/2012, 7:30 pm Link to this post Send Private Message MSN Blog
 
jacksback Profile
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Date Registered: 05-2011
TOTAL POSTS: 14
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Re: Timing Chain service/Replacement.


O.K. So we have good news. Piston / plunger found and retrieved.
So here's the solution: Get yourself or borrow a Snap-on inspection camera. (Cheaper ones like those on Ebay are no good.) Snap-on has a small 6mm camera with led light so goes down easily. Then start looking. It was found wedged between the timing chain lower gear and the front case. Needed pushing out from beneath (must remove lower oil pan) and simply picked up with magnetic pickup tool from the top. As discussed with Scott, as to possible drop zones, the most likely seems to be somewhere above the crankshaft or balancer chain, or further down maybe on the balance unit. So if you have no camera, try these two areas first. Without the camera, I would not have found it. Many hours of aggravation has been averted thanks to Scott and that little camera.
Fitting the new Chain tensioner tomorrow and will let you know how it goes.

Added: Car running for a few days now and all seems good, with no more chain rattle.
Note, if you do try to remove the tensioner without retracting it first and using a pin to stop it coming out, then I suggest holding the plunger with a strong magnet so it doesn't fall into the engine, but keep in mind there is also a spring inside it too.

Last edited by jacksback, 6/Aug/2012, 11:25 am
31/Jul/2012, 9:31 pm Link to this post Send Email PM   Send Private Message Blog
 
Fixemup Profile
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Date Registered: 02-2015
TOTAL POSTS: 3
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Ok so i'm resurrecting this thread a little here!..

I have a problem sound that is very similar to this timing chain rattle, but not quite like the sound from the previous video. My mechanic initially told me it sounded like the cat converter needed replacing, which i did and it hasn't helped. It is running a lot better due to having had a partially blocked cat converter though.

My car has done 306k, so it's been around a bit. The rattle doesn't occur until it's been running for 15+ minutes, and is worst at around 2000rpm. As the revs go up it seems to stop, or at least the noise of the engine might be masking it. When i take my foot off the pedal the noise slows down and fades but it almost sounds like something is spinning as it slows. It's not the easiest to describe.

Once the rattle begins the car runs pretty rough, sounds more like a diesel, particularly when idling. It doesn't seem to be going through any oil, although i did find no oil on the dipstick a few weeks after it got its last service. I topped it up and it's been ok since then leading me to wonder if the mechanic forgot to refill the oil.

I haven't taken it back yet after getting the new cat converter, i'd like to see if i can come up with some info to help with the diagnosis.

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Sam
2001 ST T30
Melbourne
(",)
17/Feb/2015, 7:27 pm Link to this post Send Email PM   Send Private Message Blog
 
Translucidus Profile
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Date Registered: 05-2010
Location: Adelaide
TOTAL POSTS: 599
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Re: Timing Chain service/Replacement.


If its OK since you put the correct amount of oil in the motor then I would say problem solved.

The Alternator spins down after motor revs because it has a free spin clutch mechanism.

How much oil did you add? Serious questions to your mechanic I would think once you determine its not using oil (Check dipstick every few days for a few weeks)

---
2007 X-Trail T31 ST-L

Xy going vertical at Bendleby Station . . .

17/Feb/2015, 10:16 pm Link to this post Send Email PM   Send Private Message
 
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Date Registered: 02-2015
TOTAL POSTS: 3
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When i said it's ok after putting oil in it i just meant that the low/no oil problem is ok, the rattling noise is still there.

I think i put a couple of litres in off the top of my head, i can't remember exactly and i don't have the oil handy. I just put in enough until i got a good level on the dipstick.

If there was a problem with the alternator then i would be having other problems with the batteries wouldn't i?

I'm going to get a couple of my workmates who know a lot more about cars than i do to have a listen and see what they think.

And yep it makes me lose a little faith in my mechanic..

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Sam
2001 ST T30
Melbourne
(",)
22/Feb/2015, 7:58 pm Link to this post Send Email PM   Send Private Message Blog
 
ZANL Profile
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Date Registered: 11-2014
Location: South Africa
TOTAL POSTS: 5
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Re: Timing Chain service/Replacement.


Hi [sign in to see URL] directed to this thread and wow! What allot good info!

A blown head gasket started me down the road of no return.
After allot of work, the only remaining item is the timing chain and [sign in to see URL] has never been done.

What i cant understand is why the timing cover requires so much [sign in to see URL] it boils down to one BIG design issue ([sign in to see URL]). The steel tube connected to the oil strainer in the sump is part of the timing cover. Even after removing the strainer, there is a small length left behind.
Had this tube "piece" been part of the strainer, which then pushed up into timing housing from below, the timing cover would simply pop [sign in to see URL] sump removal, no exhaust removal, no strut removal, no fancy [sign in to see URL] done with motor in car.

Am I missing something? (Quite possible at this stage...)

Regards
Nick.

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Nick Boshoff
T30 - 2005 Xtrail. 2.0lt Petrol 4x2 RHD.
13/Apr/2015, 4:46 pm Link to this post Send Email PM   Send Private Message Blog
 
Foxfarm11 Profile
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Date Registered: 11-2015
Location: Bredbo, NSW
TOTAL POSTS: 3
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Re: Rough idle caused by stretched timing chain?


Hi there

I am a newby both to this forum and the 2008 T31 x trail that we recently purchased 5 months ago.

So, we have had trouble with the indicators not working properly and I know we are up for an IPDModule but the real problem lies in the fact it idles as rough as anything - but seems to go alright otherwise.

We have had it hooked up to the computer with errors reading problems with injectors, low on fuel, fuel filter. However, we have checked all these things and they all appear ok.

Today, I was told it is possibly a stretched timing chain. Although this thread seems to say it should then be making funny noises at the 100km/h mark or with up hill noises. However, we are running smooth at this speed up hill so perhaps our latest theory that we have a stretched timing chain is wrong. It has done 178,000 and we don't know if has had any significant services.

Has anyone got any thoughts?
9/Dec/2015, 4:16 pm Link to this post Send Email PM   Send Private Message Blog
 


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