 | Home > Puma (Tdci) > Heavy knock on startup |
 
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| keith Member Since: 15 Aug 2012 Location: Edinburgh Posts: 2212  
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Got the knocking on startup on my12 plate 110. 65000 miles
There are threads for the problems on the 2.4 but I can't find the reason for the 2.2 Any ideas please. Goes away after warmup and seems loudest from main gearbox. Keith |
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27th Sep 2018 9:42pm |
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| ickle Member Since: 22 Jul 2010 Location: South Vendee Posts: 1782  
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gearbox mounts, exhaust hitting somewhere /
Hopefully not too expensive! |
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28th Sep 2018 6:36pm |
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| keith Member Since: 15 Aug 2012 Location: Edinburgh Posts: 2212
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Not the mounts or exhaust but Mk it is an internal noise and slight reduction when depressing the clutch.
Perhaps clutch is on way out but strange as noise goes away at warmup Cheers Keith |
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28th Sep 2018 8:59pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674  
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Did you get a resolution to this Keith? I get a double knock immediately on turning the key. Cranks and starts fine and is only there when cold. Any idea from the collective, 2.2 not 2.4.
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30th Sep 2022 5:19am |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3641 
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clutch plate?
try starting with clutch pedal pressed and not pressed see if the knock changes, also listen for a rattle when the engine stops DEFENDER 90 TDCI XS, I hope everyone is well and your land rovers make you happy |
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30th Sep 2022 5:24am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Should have added, makes no difference if clutch is in or out.
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30th Sep 2022 5:25am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17378 
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If it was a 2.4 I'd be thinking of the PCJ problem, but a 2.2 shouldn't experience this. There was, as I recall, a problem with the variable-volume oil pump on the 2.2 but I don't think the symptoms matched yours.
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30th Sep 2022 5:52am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Thanks Blackwolf. Interestingly I did a double tap on the heater plugs this morning and it started without a knock, so the temperature seems to affect it. I’ll try this experiment out again over the next few days and see if I can prove the theory.
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30th Sep 2022 7:06am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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Been trying this out. When I turn over from cold immediately after the glow plug light goes out I get the knock, if I let the heater run on I don’t. Could it be diesel knock and a potential injector problem? Or glow plug?
There are no issues with the engine actually firing up. |
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4th Oct 2022 7:44pm |
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| keith Member Since: 15 Aug 2012 Location: Edinburgh Posts: 2212
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Co1
Apologies for slow reply but thanks to others above who have tried to help. Yes I still have “the knock” it could just be the diesel knock from a 120k engine however pointers towards the clutch are also correct. Depressing the clutch pedal does takes away the significant knock and rattle and of course one won’t know until a clutch is required and replaced. On another point…… At what mileage intervals would we be replacing the timing chain? My serpent belt has been done but one can’t see the internal chain. Keith |
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16th Oct 2022 12:47pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3674
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I asked the timing chain question to my local Indy recently who said there isn’t an interval. He had a listen to mine and said there is years in it yet!! These engines are a non interference engine anyway, so if it does fail I don’t believe it will cause any damage.
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16th Oct 2022 1:39pm |
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