V6 Rattle

woody804 · 16th March 2015, 16:15

Hi all, my ZT180 has a rattle on start up that lasts around a minute or so then goes away, I've changed the oil to no avail, it sounds like plastic slapping near the inlet manifold but then stops after a minute?
Confused.com lol
Cheers
Paul

Greeners · 16th March 2015, 16:16

sounds like the butterfly in the inlet manifold is on its way out...

woody804 · 16th March 2015, 16:19

Would it not rattle all the time tho?

dattrike · 16th March 2015, 16:27

purge valve? mine does it too, disappears after a while.

woody804 · 16th March 2015, 16:29

It's not the purge valve, it's more like a plastic rattle that a tick lol

stocktake · 16th March 2015, 16:38

If it were a failed vis motor, half open/closed highlighting a worn manifold I would expect it to be a constant rattle.

SD1too · 16th March 2015, 18:49

Quote:

Originally Posted by woody804

Hi all, my ZT180 has a rattle on start up that lasts around a minute or so then goes away ...

Paul,

I had this, and you're not going to believe me but it was a cut in the auxiliary drive belt.

Simon

kaiser · 16th March 2015, 18:52

It is very likely the butterflies loose on the rod - or even off the rod. For some reason it makes most noise on start up -- initially. Eventually it becomes more constant, and you will have to do some surgery or replacement unless you want the car to sound like a bad diesel.

16th March 2015, 16:15	#1
woody804 Gets stuck in 75 Saloon Join Date: Dec 2007 Location: Grays, Essex Posts: 758 Thanks: 1 Thanked 63 Times in 40 Posts	V6 Rattle Hi all, my ZT180 has a rattle on start up that lasts around a minute or so then goes away, I've changed the oil to no avail, it sounds like plastic slapping near the inlet manifold but then stops after a minute? Confused.com lol Cheers Paul

16th March 2015, 16:16	#2
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	sounds like the butterfly in the inlet manifold is on its way out... __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

16th March 2015, 16:27	#4
dattrike Posted a thing or two V6 2ltr auto in copperleaf +CDTI Auto in Royal Blue on loan to Son Join Date: Jul 2010 Location: Tewkesbury, Gloucestershire Posts: 1,709 Thanks: 105 Thanked 476 Times in 267 Posts	purge valve? mine does it too, disappears after a while. __________________

16th March 2015, 16:38	#6
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,593 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	If it were a failed vis motor, half open/closed highlighting a worn manifold I would expect it to be a constant rattle. __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

16th March 2015, 16:19	#3
woody804 Gets stuck in 75 Saloon Join Date: Dec 2007 Location: Grays, Essex Posts: 758 Thanks: 1 Thanked 63 Times in 40 Posts	Would it not rattle all the time tho?

16th March 2015, 16:29	#5
woody804 Gets stuck in 75 Saloon Join Date: Dec 2007 Location: Grays, Essex Posts: 758 Thanks: 1 Thanked 63 Times in 40 Posts	It's not the purge valve, it's more like a plastic rattle that a tick lol

16th March 2015, 18:52	#8
kaiser This is my second home 75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007 Location: Johannesburg ZA Posts: 6,200 Thanks: 1 Thanked 859 Times in 613 Posts	It is very likely the butterflies loose on the rod - or even off the rod. For some reason it makes most noise on start up -- initially. Eventually it becomes more constant, and you will have to do some surgery or replacement unless you want the car to sound like a bad diesel.