Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990
Discovery 3 engine noise when cold
Hi hope someone can clear his up for me
I have a 2.7 discovery 3 2009
When I first start it it sounds really tappy (cammy) when pulling away or under load only lasts for about maybe a mile or so until it’s warmed up a bit then it’s really quiet
Was googleing it and people are saying that’s what Diesel engines do until warm as they need engine temp to burn the fuel properly
Thanks a lot peps
11th Jan 2018 6:22 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72775
Video it and stick that on YouTube.
Mine was like that, getting progressively worse. Will see if I have a recording.
11th Jan 2018 6:27 pm
WW88
Member Since: 19 Aug 2017
Location: Northants
Posts: 250
Mine gets noisier when it’s fully up to temp
11th Jan 2018 6:51 pm
James1974
Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990
Mine is really quiet once warm only when cold
11th Jan 2018 7:11 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8072
It's what any worn engine does, petrol or diesel with a poor supply of oil to the cam shafts, check correct oil is being used, check oil pressure, a new oil filter and pump may help.It can when others can't,
It will when others won't,
It goes where others don't.
11th Jan 2018 8:20 pm
James1974
Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990
Yea gonna give it a oil change but not so sure it’s cause it’s a worn engine was reading that all diesels do it when cold cause of the way diesel works (diesel knock or something )
Only other thing I think it may be is the lifters not having enough oil pressure to start off with as they loose there pressure when not running
Don’t think it’s that serious as don’t do it for long but sounds just like a engine with incorrect valve clearance if that makes any sense I’m
Thinking maybe a oil flush and a
New
Filter
And oil
11th Jan 2018 8:43 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Every make of diesel engine is different and even the same type have their own characteristics, and of course theres the owners to take into account as everyone drives different and hears the same sounds differently.
2.7 quite common to have alight tinkle/rattle when first started, as soon as oil light goes out noise should stop and the noise is the cam chain tensioner worn and the oil pressure tensions the er tensioner when engine is running.
As said above video the noise.
4 cylinder diesels do indeed sound like tractors even the modern stuff sounds as rough as can be, listen in any car park as one rattles past, any 6 cylinder should be much quieter even old stuff.
Dont believe all you read on google, in the old says they were called bar stool mechanics
11th Jan 2018 9:00 pm
James1974
Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990
Yea to me sounds like lifters until they build with pressure it’s the same sound as a car that has a ohv engine that needs valve shimming Then it’s really quiet well quiet for a diesel anyway as any diesel is never as quiet as a petrol
But like I said gonna drain oil flush oil through and new filter and oil see if that helps as I’m sure crap old oil won’t help it much especially with the hydronic lifters
11th Jan 2018 9:41 pm
James1974
Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990
How can I add a video to a post I noticed some others have done it
11th Jan 2018 10:00 pm
WW88
Member Since: 19 Aug 2017
Location: Northants
Posts: 250
YouTube? If you struggle, email it to me and I will post it for you through my YouTube account.
11th Jan 2018 10:01 pm
James1974
Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990
If you could pm me your email I can send it to you if you don’t mind I never posted anything on you tube mate I just took a video of the noise when rickingover and sounds like it’s comming from tappets/cam drivers side
11th Jan 2018 10:30 pm
WW88
Member Since: 19 Aug 2017
Location: Northants
Posts: 250
Here is the video..
11th Jan 2018 10:43 pm
James1974
Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990
Appreciate that mate
11th Jan 2018 10:45 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72775
Not quite as "tractory" (SWMBO's word) as mine was.
11th Jan 2018 10:46 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
I could be wrong but that sounds like injectors to me, remove engine cover and refit oil cap, start engine and get your biggest screwdriver and place the end on each injector in turn and put your ear to the handle, you will be surprised at the noise.
Has the engine cover still got its foam on the inside? there should also be heat proof blankets over each bank of injectors.
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