 | Home > Puma (Tdci) > PUMA 2.2 - Metallic Squeeling Under Load |
 
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| BaCoNMX6 Member Since: 22 Apr 2022 Location: Amsterdam Posts: 63  
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Hey All! Hoping for some advice here on a new issue with my 2.2 PUMA.
For the last couple weeks I have been havng a metallic screeching noise coming from the car. (video and pics here here https://drive.google.com/drive/folders/1WT...p=sharing) At first I thought it could be the belt however it seems to be exhaust/boost pressure related as it only happens under load and doesnt vary with revs or speed. Also it goes away once things are warm (Maybe 5-10 mins into the drive atm - but seems to be getting worse/taking longer to go away) Reading around it sounded like it could be the turbo to exhaust manifold gasket however upon taking the heat shield off today I wasnt able to find any soot marks anywhere (although hard to see) and perhaps I am wrong but it also doesnt look like there is even a gasket at that joint? While it was easily accessible I threw in a new v-band gasket and re-tensioned that but the issue is still there. TBH I am just a bit hesitant to fully remove the turbo as the oil drain pipe looks to be a pain to remove and re-fit and the 3 studs needed to remove the turbo from the manifold also dont sound like fun..... So fingers crossed someone has any other ideas i can try first 
Also (while its hard to tell for sure) the g/f taking the video said it sounded like it was coming from nearer the A/C compressor and not lower down near the exhaust connections.... Cheers for any and all advice! Edit - For reference car has upgraded Allisport intercooler and hoses and there is no CEL or obvious loss of power and seems to be acheiving the same boost it was before the noise (peak of 26psi) |
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22nd Aug 2022 3:11pm |
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| BaCoNMX6 Member Since: 22 Apr 2022 Location: Amsterdam Posts: 63
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Hey Steve, not sure I understand the question completely however the noise doesnt happen when free revving (out of gear or just clutch held in) and upon a gear change the noise stops until enough load is applied.
I do have a video while driving but its pretty useless due to road noise etc! haha |
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22nd Aug 2022 4:04pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17372  
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Split hose to or from the intercooler, split intercooler, or a leak between head and exhaust manifold or manifold and turbo.
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22nd Aug 2022 5:18pm |
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| BaCoNMX6 Member Since: 22 Apr 2022 Location: Amsterdam Posts: 63
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Hey Blackwolf,
Thanks for the reply...the last 2 (exhaust gasket related) is where my head is at simply due to the metallic noise and also goes away once things are warmed up which I wouldn't imagine being the case on the intake side (plus the entire intake system is only a few thousand kms old) Is there anything EGR system related (joins or gaskets) that is worth checking? And is manifold removal a big job? - and just replace the gasket or also studs/nuts/anything else? |
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22nd Aug 2022 7:15pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5695 
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Turbo to exhaust manifold was a regular fail on my tdci.
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22nd Aug 2022 8:00pm |
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| BaCoNMX6 Member Since: 22 Apr 2022 Location: Amsterdam Posts: 63
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Is there a gasket there from factory? My mechanic says there isn't (and it looks like there isn't) but there is one in the kit I bought so just curious. Also it is different to the 2.4 from what I can work out as there are a few HD options for that gasket for the 2.4 but nothing for the 2.2?
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22nd Aug 2022 8:36pm |
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| mwestcrew Member Since: 09 Dec 2019 Location: South Warwickshire Posts: 251 
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My early Puma, which was tuned to hel,l made that noise when it snapped an exhaust manifold stud (which it did a lot due to over high exhaust gas temperatures!!!) causing exhaust leak between head and manifold. 2011 130 Utility Body
2005 110 Van |
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22nd Aug 2022 9:49pm |
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| mwestcrew Member Since: 09 Dec 2019 Location: South Warwickshire Posts: 251
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Doh! Double post. 2011 130 Utility Body
2005 110 Van |
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22nd Aug 2022 9:54pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17372
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I can only speak for the 2.4, but imagine the 2.2 is the same.
There is a gasket between the head and the manifold, and between the manifold and the turbo, but not between the turbo and downpipe/cat/DPF. Replacing either is not particularly difficult provided the the two inaccessible bolts behind the alternator bracket are sound, however there is a tendency for the threads in the head to strip for these which is a major complication since it involves a lot of dismantling to get access to helicoil them. Leaks around the EGR are very rare compared to gasket leaks. If you have a remap the increased EGT tends to make the manifold flex in odd ways (which is what strips the threads) and the noises can be temperature dependent. |
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22nd Aug 2022 10:18pm |
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| landhank Member Since: 27 Oct 2021 Location: RLP Posts: 37 
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Good morning,
the 2.2 has no gasket between manifold/turbo but has a gasket between turbo and DPF. |
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23rd Aug 2022 3:23am |
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| BaCoNMX6 Member Since: 22 Apr 2022 Location: Amsterdam Posts: 63
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Thanks Both!
The oil return bolts are exactly what is holding me back to be honest! They look like areal pain! With respect to gaskets on the 2.2 it seems my understanding (and what my LR mechanic told me) is correct - there is a head/manifold gasket, and a turbo/DPF v-band gasket but nothing at the Turbo/manifold. I know that Nakatanenga do an uprated gasket for the 2.4 however are clear it doesnt fit the 2.2 (and looks to be the slightly wrong shape too). However the turbo gasket kit i bought does have a turbo/manifold gasket in the kit....pics here: https://drive.google.com/drive/folders/1WT...sp=sharing Assuming when others have this issue they use a gasket....otherwise the only option is resurfacing the mating surfaces? The other debate I am having given i havnt been able to see any soot yet so unsure if its the turbo/manifold or manifold/head gasket leaking is to replace them both since all the work 'seems' to be on removing the turbo..... is it just the exhaust manifol gasket to buy or is there another gasket or something between the manifold and EGR system near the firewall since i cant quite see whats back there? Also is it worth picking up new nuts and a couple studs just in case? And i have also seen exhaust stud spacers? never seen that before? Pic attached - assuming the studs to watch for are the ones at the radiator end hidden behind the a/c compressor? And the squared section at the firewall end is what i am curious about on what it mounts to and if there is another gasket to check? Cheers again for all the help! |
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23rd Aug 2022 6:52pm |
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| landhank Member Since: 27 Oct 2021 Location: RLP Posts: 37
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As far as i know the gasket between manifold and turbo is used when you put in a new turbo together with an used manifold (after checking if the manifold is not warped or something). If both parts are brandnew or machined you dont need a gasket.
The square thing at the firewall could be the EGR cooler? Check part nr. 1 here : https://www.lrworkshop.com/diagrams/land-r...ve_2.2tdci and obviously there is a gasket as well. Have you checked the turbinewheels? Are they ok? Is there any play? For me it sounds more like a "mechanical" sound?! |
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24th Aug 2022 5:37am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3414  
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To me sounds like the compressor or turbine (inside the turbocharger) touching their respective housings.
If you take the air intake connection off, you can feel the compressor. It is normal to have some radial play (so you can move the compressor a bit up/down/left/right) but it should have zero axial play (you should not be able to move in/out (forward backwards). 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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24th Aug 2022 5:50am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5695
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The 2.2 may not have a gasket between the turbo and manifold like the 2.4, but on the 2.4 it isn’t the gasket that fails, it’s the mating surfaces warping, more than the gasket can seal. So are the 2.2 parts made of better stuff so they can’t warp.
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24th Aug 2022 8:39am |
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