Anyone diagnose this rattle?

Canonite · 21st January 2012, 19:01

It sounds like a Woodpecker banging away in the engine, its a constant rattle and gets louder as the throttle is pressed.

Sound like it's around the area of the cambelts but lower down.

Video 1
Video 2
Video 3

Fusilier · 21st January 2012, 19:03

Alan

Sounds like it is the auxillary belt and tensioner to me, I had the same problem on a ZT I bought, and had a new belt and tensioner fitted, no problems whatsoever now

Stu

chrissyboy · 21st January 2012, 19:09

sounds like a hydrolic tappet to me ...

Canonite · 21st January 2012, 19:28

More videos added.
It sounds really bad. If it was tappets where would the rattle come from?

mh007 · 21st January 2012, 20:51

Sounds like a combination of things to me.
From the engine videos it sounds like tappets but from video 2 when revved, it's heavier, like bottom-end.
What's the oil pressure like ?
Silly question because i'm sure you've checked, but is the oil low ?
You can eliminate the Auxilliary Belt Tensioner by removing the belt.
It's a little difficult to be sure from the youtube clips though.
One things for sure, see to it soon !!

mantianak · 21st January 2012, 22:05

Does the sound change as the engine gets hotter? Tappets can tap when they get too much oil... at least in my limited experience. Have you checked the oil level?

bl52krz · 21st January 2012, 22:16

Quote:

Originally Posted by Canonite

It sounds like a Woodpecker banging away in the engine, its a constant rattle and gets louder as the throttle is pressed.

Sound like it's around the area of the cambelts but lower down.

Video 1
Video 2
Video 3

Can not tell where the rattle is coming from,but it looks like it could have some straw or something off the farm its been on, stuck somewhere.

Vanbursta · 22nd January 2012, 00:13

Either (hopefully) knock sensor leading to pre ignition or incorrect timing leading to pre ignition or (hopefully not) big end / main bearings

Vanbursta · 22nd January 2012, 00:15

Remove the fan belt, see if the noise disappears, it sounds like mine did just before it shredded itself

HarryM1BYT · 22nd January 2012, 09:06

Quote:

Originally Posted by Canonite

It sounds like a Woodpecker banging away in the engine, its a constant rattle and gets louder as the throttle is pressed.

Sound like it's around the area of the cambelts but lower down.

Video 1
Video 2
Video 3

Difficult to tell from a recording, but...

It sounds like a heavy bottom end knock, like crank bearings. Not tappets, they would be a much lighter noise. Also see if there is any undue movement on pulleys.

21st January 2012, 19:01	#1
Canonite This is my second home BMW 330d Tourer, MG ZT 180 SE XPG, VW Polo 6R 1.2 TDI Bluemotion Join Date: Jul 2011 Location: York Posts: 6,025 Thanks: 363 Thanked 574 Times in 319 Posts	Anyone diagnose this rattle? It sounds like a Woodpecker banging away in the engine, its a constant rattle and gets louder as the throttle is pressed. Sound like it's around the area of the cambelts but lower down. Video 1 Video 2 Video 3 Last edited by Canonite; 21st January 2012 at 19:11..

21st January 2012, 19:03	#2
Fusilier Moderator / RS North East MG ZT T 180,MGF Freestyle, Jaguar XKR Convertible and XF Join Date: Jan 2008 Location: Newton Aycliffe Posts: 6,397 Thanks: 1,329 Thanked 2,231 Times in 1,309 Posts	Rattle Alan Sounds like it is the auxillary belt and tensioner to me, I had the same problem on a ZT I bought, and had a new belt and tensioner fitted, no problems whatsoever now Stu Last edited by Fusilier; 21st January 2012 at 19:06..

21st January 2012, 19:09	#3
chrissyboy This is my second home lovely little ford focus. Join Date: Jul 2009 Location: East Dulwich Posts: 7,877 Thanks: 2 Thanked 82 Times in 68 Posts	sounds like a hydrolic tappet to me ... __________________ [ I'm really confused. -I keep dreaming I'm an insomniac

21st January 2012, 20:51	#5
mh007 This is my second home MG ZT260 SE, MG ZT190+, MG ZTT 160, R75 Conn SE 2.0, R75 Conn SE 2.5 X 3, R75 Club SE 1.8, P5B Coupe Join Date: Jul 2009 Location: Keynsham, Bristol Posts: 4,211 Thanks: 65 Thanked 635 Times in 499 Posts	Sounds like a combination of things to me. From the engine videos it sounds like tappets but from video 2 when revved, it's heavier, like bottom-end. What's the oil pressure like ? Silly question because i'm sure you've checked, but is the oil low ? You can eliminate the Auxilliary Belt Tensioner by removing the belt. It's a little difficult to be sure from the youtube clips though. One things for sure, see to it soon !! Last edited by mh007; 21st January 2012 at 20:55..

21st January 2012, 22:05	#6
mantianak I really should get out more....... ZT 190+ Saloon Join Date: Nov 2006 Location: Poole Posts: 2,413 Thanks: 6 Thanked 22 Times in 21 Posts	Does the sound change as the engine gets hotter? Tappets can tap when they get too much oil... at least in my limited experience. Have you checked the oil level? __________________ http://i35.photobucket.com/albums/d1..._signature.png

21st January 2012, 19:28	#4
Canonite This is my second home BMW 330d Tourer, MG ZT 180 SE XPG, VW Polo 6R 1.2 TDI Bluemotion Join Date: Jul 2011 Location: York Posts: 6,025 Thanks: 363 Thanked 574 Times in 319 Posts	More videos added. It sounds really bad. If it was tappets where would the rattle come from?

22nd January 2012, 00:13	#8
Vanbursta Posted a thing or two Rover 75 2.0 V6 Conn Join Date: Apr 2007 Location: Stainton Grove Posts: 1,637 Thanks: 266 Thanked 406 Times in 257 Posts	Video 2 Either (hopefully) knock sensor leading to pre ignition or incorrect timing leading to pre ignition or (hopefully not) big end / main bearings

22nd January 2012, 00:15	#9
Vanbursta Posted a thing or two Rover 75 2.0 V6 Conn Join Date: Apr 2007 Location: Stainton Grove Posts: 1,637 Thanks: 266 Thanked 406 Times in 257 Posts	Video 1 Remove the fan belt, see if the noise disappears, it sounds like mine did just before it shredded itself