 | Home > Puma (Tdci) > 2.4 2008 top end rattle diagnosis |
 
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| chrismack85 Member Since: 25 Feb 2020 Location: Birmingham Posts: 60   
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Hi all…
Ok 2008 2.4 84k miles, ex utility so probably been running at idle in a field every day… Tapping / rattle constant wi th knock… I’ve driven it for around 3 hours since collecting it and the noise does not change in anyway other than follow the revs Video here Note it’s note making the noise when there’s no compression (injector out) https://youtube.com/shorts/1Vwz-SyqMxI?feature=share So far done the following - ran without the aux belt - noise still there -Swapped the injectors and recoded and re-learn (by specialist/ software etc) -New injector seals top and bottom -VCV valve etc to rule out diesel knock / usual gremlin listed on forums -Changed oil and filter and fuel filter - no metal -Timing chain kit inc tensioner and gears, chain was stretched nearly half a link -Checked timing locked in place for above -Replaced entire rocker arm ladder compete kit as I found a rocker scored where it rests against the hydraulic tappet above cyl No1 all the others where smooth. -compression test 380, 380, 390 and 370psi -checked around cam shafts for cracks -checked around exhaust manifold for witness marks of cracked manifold I’ve lost the will to live… I’ve been driving it as needs must to and from garages etc and it’s not getting worse… pulls fine as if nothings wrong other than the rattle… Few specialists suggest piston slap… anyone any experience of this? Does it get worse? Annoyingly my borescope won’t go down the the injector or glow plug port. I’ve been around it with a stethoscope/probe and it sounds like a metal on metal from the front end drivers side below/around the cam TIA as I’m losing the will to live guys! Cheers |
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14th Mar 2022 10:33pm |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 427 
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Stuck hydraulic lifter? Meaning you're getting a bit of tappet noise?
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15th Mar 2022 1:19pm |
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| chrismack85 Member Since: 25 Feb 2020 Location: Birmingham Posts: 60
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Replaced the whole rocker rail assembly complete with hyd lifters, rockers etc
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15th Mar 2022 5:35pm |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5424 
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As you found one rocker scored, have you checked the condition of its replacement? Could that be the issue?
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15th Mar 2022 7:26pm |
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| chrismack85 Member Since: 25 Feb 2020 Location: Birmingham Posts: 60
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Only ran for an hour so prob won’t have any witness marks on replacement
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15th Mar 2022 9:43pm |
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| Fatboy Slim Member Since: 04 Feb 2008 Location: Bridgend Posts: 1006 
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I had one like this in the other day. It was a knackered injector. Had the four tested. One was totally stuffed, another borderline stuffed. Ended up putting four recon ones in it and was perfect after that. Might be worth testing them before going any further.
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16th Mar 2022 3:37pm |
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| Fatboy Slim Member Since: 04 Feb 2008 Location: Bridgend Posts: 1006
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Failing that could be a small end....
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16th Mar 2022 3:46pm |
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| chrismack85 Member Since: 25 Feb 2020 Location: Birmingham Posts: 60
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Did it sound like in that video link?
We put another set of injectors In/ recoded and calibrated on LR software relearn etc and still coming from cyl no 1 3 garages LR/transit suggested based on everything I’ve don’t so far it’s prob piston slap or little end 🤷♂️ Also noticed yesturday running it without rocket cover that the first 3min run and the oil was only seeping out the top of the rocker rail oil ports 2nd and 3rd run the oil shot up like the fountain outside that famous vegas casino and hit the ceiling 6m up… Last lastly the oil seemed to froth or solace out on the drivers side front corner even tho the engine is cranked up so wondering if that’s an indicator or something going on with a valve there above n01 |
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16th Mar 2022 3:50pm |
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| Dave2068 Member Since: 06 Apr 2018 Location: Sutton Coldfield Posts: 6 
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Chris, had the same noise on my Puma for 3 years. Turned out to bit a crack in the camcarrier allowing the hydraulic tappet to vibrate. Found it when I was changing an injector.
Ended up changing Cam Carrier, Exhaust Cam etc etc >Had this done in Dec 2021 |
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21st Mar 2022 10:38am |
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| chrismack85 Member Since: 25 Feb 2020 Location: Birmingham Posts: 60
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Where was the crack - could you see it if you took the rocker rail off… I’ve looked all around where the cam shafts go into the casting the sit in?
I’m just about to push the button on a new engine 🤮 so be great if it is that… Was it obvious? Cheers |
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21st Mar 2022 11:25am |
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