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kenzle8a



Member Since: 12 Feb 2020
Location: None
Posts: 1074

 
Tapping at idle when warm
Hi all,

I recently did the injector loom and cleaned out the plugs in the ECU in my 2003 TD5.

When its warm theres a distinct louder tap coming from the engine (at least I think there is). I've tried my best to catch it on video.

Post #855617 12th Sep 2020 10:11am
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Chris86



Member Since: 15 Jul 2014
Location: South Yorks
Posts: 755

United Kingdom 2005 Defender 110 Td5 USW Chawton White
Hello,

Mine does the same, it sounds particularly bad when lugging at low revs too.

When its at its worst mine sounds like marbles rolling about in the top end- has been to a couple of specialists who are unable to sort it. Its a bloody 'orrible noise though.

Chris
Post #855628 12th Sep 2020 11:17am
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kenzle8a



Member Since: 12 Feb 2020
Location: None
Posts: 1074

 
Hi Chris, I've done a bit of digging and as you said it seems to be a TD5 thing some do which still doesn't always fill me with hope.

As far as I can tell its not doing anything bad, I suspect it could be injector clearances, however I think it could still be the oil in the ECU issue 'clearing out' there was a lot of oil in there.

I gave the plugs and ECU plug a good clean when I changed the loom but I think repeated cleans might be needed, I've ordered a lot of contact cleaner to be sure...

Its into the local specialists for the A Frame replacement next week so may get them to plug it in when its there, my scan gauge isn't a patch on a nanocom.
Post #855630 12th Sep 2020 11:25am
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Chris86



Member Since: 15 Jul 2014
Location: South Yorks
Posts: 755

United Kingdom 2005 Defender 110 Td5 USW Chawton White
I have been pulling my hair out over it for about 3 years- it was initially suspected as being injectors performing poorly so had a set of new injectors and there was a marginal improvement.

It drives me absolutely mad- when its really hot, it sometimes actually manifests as a bit of an intermittent miss as it returns to idle.

regards

Chris
Post #855633 12th Sep 2020 11:57am
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

England 2004 Defender 110 Td5 CSW Bonatti Grey
If there’s a sound like marbles rolling around have a listen for a chirp sound when switching the engine off. This could be the harmonic damper pulley, there’s a good write up on (I think it was a long time ago I read it) discovery2.co.uk or something like that.

Edit: here’s a link http://www.discovery2.co.uk/CrankPulley.html Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #855642 12th Sep 2020 1:08pm
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BaronDefenders



Member Since: 28 Jun 2019
Location: London/Cotswolds
Posts: 806

United Kingdom 2004 Defender 90 Td5 SW Santorini Black
Try putting some Stanadyne through it. Could be a bit of diesel knock. Charlie

1949 Series 1 80 (SOLD)
2002 Td5 90 (SOLD)
2008 Freelander 2 (SOLD)

1958 Series 2 88 Pastel Green (2019 LR Legends Best Restored)
1983 V8 110 Limestone (Previously owned by Tom Sheppard MBE)
2004 Td5 90 Santorini Black (Td5INSIDE Powered & Rebuilt by CSK)
2012 Puma 110 Zermatt Silver (Overlanding Build)

Instagram: @BaronDefenders
Post #855672 12th Sep 2020 6:05pm
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markb110



Member Since: 22 May 2010
Location: Guildford
Posts: 2520

England 2002 Defender 90 Td5 HT Epsom Green
Just another idea, and this I cured last weekend

On the sound deadening cover , drivers side, one of the grommets with the bolt through it had partly perished and push through on the bolt shank.

This in turn was causing the sound deadening cover to flap and make a knocking / ticking noise.

I replaced it with a big grommet I had and a large washer for a cheap fix.

Worth checking and ticking off the list at the very least.....
Post #855678 12th Sep 2020 6:33pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

England 2004 Defender 110 Td5 CSW Bonatti Grey
Also try removing the bonnet altogether and see if the noise disappears, as if the hinge bushes wear the hinge can tap on the bulkhead. Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #855684 12th Sep 2020 7:05pm
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kenzle8a



Member Since: 12 Feb 2020
Location: None
Posts: 1074

 
I will have a look, the bonnet does move a touch here and there, will also pull the belt off and have a look at the pulley.

BaronDefenders wrote:
Try putting some Stanadyne through it. Could be a bit of diesel knock.


I've ordered some up, doesn't hurt to try.

markb110 wrote:
Just another idea, and this I cured last weekend

On the sound deadening cover , drivers side, one of the grommets with the bolt through it had partly perished and push through on the bolt shank.

This in turn was causing the sound deadening cover to flap and make a knocking / ticking noise.

I replaced it with a big grommet I had and a large washer for a cheap fix.

Worth checking and ticking off the list at the very least.....


Ah cool, more bits of them are self dismantling it appears....
Post #855818 13th Sep 2020 3:44pm
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