Tappet Rattle ??

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Tappet Rattle ??

Postby Dinosaur on Thu Aug 30, 2012 1:17 pm

Hi All

Have searched the forum for an answer and cannot find one.
Please Note that this problem has been there since new, and not related
to my fitting of Gas over Diesel.

I have alsways been a petrol engine driver for the last 45 years, and
so when I got my new Triton, the noises were unfamiliar.
However, after a while I decided that there was a rattle that did not
belong to normal Diesel sounds.
The best desription is "Tappet rattle". But because it doesn't happen all the time
I doubt it would be that.

Firstly it happens worse in the morning when cold.
Then once the engine has warmed up it disappears untill you drive
the vehicle in "Float" mode, ie: not accelerating nor descellerating.
It's where you give it just enough pedal to take up the slack.

I have pointed this out to the service dept in Wagga a number of times now
and they have done things like "Re-Flash" but it didn't fix it.
Initially I left the vehicle there overnight, so at startup they could hear
the problem. Even taking a tech for a drive and "Floating" to highlight the noise,
they refused to acknowledge that there is even a noise.
After 50+ years in factories , my hearing is shot when it comes to having a conversation in a crowded room,
but with no other noise, I can hear a mouse fart. :lol:

They then started up another Triton that was cold, and to my ears, it was like chalk
and cheese.It sounded all low frequency noise, no higher frequency rattles.
When I declared on the Feedback call from Mitsubishi that I was not satisfied
with the respose to my problem, I got the cold shoulder from them locally.
Almost like "How dare you complain".

I am about to become a permanent Grey Nomad, and don't want to find out at the wrong time
that there is a failure that could have been prevented.

Has this happened before, and is there a fix ?

Regards

EDIT:Thought that the profile would come up on the right, so here is vehicle detail.
2011 Turbo Diesel Triton Dual Cab GLR
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Re: Tappet Rattle ??

Postby Lee-thal on Thu Aug 30, 2012 1:21 pm

My reccomendation is to go to another Dealer and get them to have a look.

Cheers
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Re: Tappet Rattle ??

Postby hvac guy on Thu Aug 30, 2012 1:41 pm

What servos are U filling up at
My engine is heaps quieter on bp
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Re: Tappet Rattle ??

Postby TUFF TROOP on Thu Aug 30, 2012 2:37 pm

It could be a possible scv issue, ( suction control valve) if it's just on the throttle at speed.. I have had a couple issues very simmilar.. Also is it blowing black smoke at all under load?
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Re: Tappet Rattle ??

Postby Dinosaur on Thu Aug 30, 2012 3:35 pm

Hi All

Many thanks for the replies.

Lee-thal , that is a good suggestion, my nearest would be Albury Wodonga.

hvac guy , Tanking fuel is rather unpredictable, as I get it where I can.
Then if I have a 10c voucher for Woolies or Coles, that is where I go first.

Tuff Troop , I have no idea of the function and when it is functional to judge if it could be the scv.
It has never blown black smoke, but it seems to me to be Engine Load related.
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Re: Tappet Rattle ??

Postby Cam472 on Thu Aug 30, 2012 4:06 pm

Timing chain tensioner? I recently had mine replaced due to a tappet sounding rattle when under acceleration.
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Re: Tappet Rattle ??

Postby hvac guy on Thu Aug 30, 2012 4:08 pm

For shits and giggles get some flash lube diesel conditioner
I use it every 6 or so tanks
It will help rule out poor fuel
Issues. Makes mine run even quieter
Specialy with bp diesel.
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Re: Tappet Rattle ??

Postby Cowboy Dave on Thu Aug 30, 2012 4:30 pm

I reckon I have something similar and have had for ages. It goes away if you plant your foot? For me I reckon it alters somewhat depending on the oil I use. You can also get a liquid moly (?sp) product that allegedly makes that sort of rattle quieter. I can't recall the name of it but you'll know it if you see it, the name jumps out at you.
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Re: Tappet Rattle ??

Postby TUFF TROOP on Thu Aug 30, 2012 4:59 pm

It won't be timing chain as mn triton is timing belt with a balance shaft belt..

It could be loose valve clearances how many ks has it done? Wouldn't think that they would be if it's done around 30k, as most I do at work are tight at the 30k service any chance u can get a video or sound recording of the issue? Would be a lot easier to help out!
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Re: Tappet Rattle ??

Postby Dinosaur on Thu Aug 30, 2012 6:10 pm

Hi All

cowboy dave
I am reluctant to use any sort of additive whilst it is still under warranty.

Tuff Troop
It's done 25000 sofar.
I did think about making a sound recording of it.
I guess with the iPhone would be easiest, but not sure the quality would be good enough.
I have already put all my electronic equipment in long term storage, as I would have been
able to separate the offending frequency.
Then again, perhaps I can load the audio file into the laptop and with the right software
do the same thing. has anyone done that on this forum ?
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Re: Tappet Rattle ??

Postby wilbo2 on Thu Aug 30, 2012 7:05 pm

I have a 2011 GLR and I also reckon my engine sounds like s#?!. I drive four pot diesels all the time at work and none of them sound as rattly as mine. I have just come to accept it as every noise I hear the dealer thinks I'm crazy (also had a squeeling in manual tranny but it cleared it self). I did get a fair puff of brownish smoke at 4000k at the lights today but I rarely rev this hard. Maybe one day I should give a knowledgeable forumer a test drive to have a listen. I've never driven another 4D56HP either. I think sound insulation on these utes is ordinary.
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Re: Tappet Rattle ??

Postby Octaneruss on Thu Aug 30, 2012 7:14 pm

Hi Dino , I know that some common rail engines have 1-2-3 stages of injection to help with fuel economy , power etc , sometimes these can be heard from the symptoms / driving conditions you have stated , as it dumps more fuel at that stage it pings a little , but if its louder than the next triton it's not right , possible faulty injector ? ( Have u heard a hilux with injector issues ? LOUD!) I'm not sure of the system Mitsi are using but would love to get my hands on a genuine workshop manual to find the ins and outs ! There is some genuine injector cleaner but I'm unsure if it's in oz yet? If yr your going on trips around oz and are fueling up any where and everywhere , I would definetly fit a pre filter with a bowl , I run a 2 micron racor in front of the genuine filter so not to void warranty , it's large and is probably a finer rating than the genuine filter ,it will also keep water out Untill the bowl is full of water of course , $400 well spent I think, good luck with it and let us all know how u go .... Russell
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Re: Tappet Rattle ??

Postby hvac guy on Thu Aug 30, 2012 7:21 pm

isnt the warranty void with the fitment of gas ?

your nearly at your 30k service maybe wait and see if the noise goes after the tappet adjustment.
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Re: Tappet Rattle ??

Postby boatpc on Thu Aug 30, 2012 7:46 pm

Octaneruss wrote:There is some genuine injector cleaner but I'm unsure if it's in oz yet?

viewtopic.php?f=38&t=5820&p=182833&hilit=fuel+treatment#p182833
Just wanted to let you know its available, i chucked 2 in the tank today and its made a difference. I'm not saying this will fix the OP issues.
Do as lee-thal says and find another dealer
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Re: Tappet Rattle ??

Postby furious on Thu Aug 30, 2012 9:31 pm

sounds like injectors rattle.
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Re: Tappet Rattle ??

Postby Longranger1 on Fri Aug 31, 2012 4:07 am

More than likely it is injector noise you are hearing - mine is worse when cold. I don't worry about it as it is normal. Tritons are notorious for it, but I've noticed other makes do the same thing as well. Common rail solenoid type injectors are noisy.

Ecutek tuning may exacebate it by lifting rail pressures but in the main it isn't anything to worry about.
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Re: Tappet Rattle ??

Postby Dinosaur on Fri Aug 31, 2012 6:49 am

Hi All

isnt the warranty void with the fitment of gas ?

hvac guy, I contacted Mitsubishi and their statement was that if they can show the warranty claim
was caused by the gas Conversion then warranty would be void.
DieselGas Aus said, that if they can prove that, then they will cover the warranty.

All words I know, but hopefully I will never have that battle.

Many thanks for all the responses, I will record the sound and goto a different dealer for my next service.
Will update the forum when that happens.

Regards
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Re: Tappet Rattle ??

Postby hvac guy on Fri Aug 31, 2012 8:24 am

Sweet as good to know
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Re: Tappet Rattle ??

Postby Magoo on Wed Oct 24, 2012 8:56 am

I have a bit of a rattle , serge and some black smoke but I think sometimes ( myself included) we start getting to worried about some things and having knowledge can be a bad thing as far as picking faults in our cars . I think there would b plenty of people with no idea of the same problems we all have that keep on driving and do plenty of ks and not spend a cent except for a oil change here and there. I've done the basic catch can and will clean manifold out and that's it Mitsubishi wont b getting any cash for any elimination games they play at $100 ph, it's time to drive it and enjoy it .
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Re: Tappet Rattle ??

Postby left1hanging on Wed Mar 06, 2013 12:02 am

I have that same issue its like a light rattling and I just recently done the blanking plate and my triton still has some surging what can I do heeeellllppppp
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Re: Tappet Rattle ??

Postby har05l on Wed Mar 06, 2013 12:50 am

left1hanging wrote:I have that same issue its like a light rattling and I just recently done the blanking plate and my triton still has some surging what can I do heeeellllppppp


So you have a 2007 ML and owned since October 2012

I'd have a look through your service book and make sure it has been maintained regularly and that tappet adjustments have been done in accordance with correct suggested periods.

As for the surge it has become well known that a few things could be the result of this, SCV or blocked manifolds the most likely cause ;)

I think you could be making a visit to mitsi :roll:
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Re: Tappet Rattle ??

Postby Honky on Wed Mar 06, 2013 7:46 am

Same symptoms as the Clutch rattle.

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Re: Tappet Rattle ??

Postby left1hanging on Wed Mar 06, 2013 4:44 pm

Thanks for help Ive cleaned the manifolds allready and it had alot of carbon build up so what is this issue with the scv is it a costly fix thanks
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Re: Tappet Rattle ??

Postby salt36 on Wed Mar 06, 2013 5:45 pm

In the past year I have had two work utes,

A 2010 Hilux 3.0 l diesel, and now,

A 2012 Triton 2.5l diesel.

Both rattle when at cruise and when cold, the Triton is worse.

The rattle at cruise is subtle with both utes but can be heard over the road noise.

I considered it normal.........
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Re: Tappet Rattle ??

Postby left1hanging on Thu Mar 07, 2013 4:53 pm

Hey guys just changed the fuel filter today and she runs like a dream at the moment but have to wait and see how long it will last but yeah shes sweet rite now that rattling is even quiter this smell of like unburnt diesel is almost gone and no more surging I took it to 130kmh just before and she purred nicely all from just a $40 fuel filter
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