Help, 2.8 engine making funny noise....

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Z3cade
Joined: Sat 09 Jan, 2010 18:18
Posts: 2634

  M roadster S50
Location: Peterborough

Help, 2.8 engine making funny noise....

Post by Z3cade »

Hi people, my z`s going into my local garage next week as its developed a weird noise from the front of the engine... :(
It sounds like a worn out bearing at idle. It seams to be coming from the prop that goes through the middle of the fan, or around that general area???
Has anyone any ideas what it could be or had that same problem???

The best i can describe the noise is it sounds like a dryed out/worn bearing.

Any ideas would be great, may calm my nerves as im hoping its nothing major! :(
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Robert T
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Joined: Mon 12 Jun, 2006 10:35
Posts: 10171

  Z3 roadster 1.9
Location: Cheshire

Post by Robert T »

Could be the death rattle of the viscous coupling.

http://www.zroadster.net/forum/viewtopi ... ath+rattle

Cheers R.
Arctic Silver '99 Z3 1.9 & Black '59 Frogeye 1275cc
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Z3cade
Joined: Sat 09 Jan, 2010 18:18
Posts: 2634

  M roadster S50
Location: Peterborough

Post by Z3cade »

Ive read the death rattle thred but mine isnt a knocking or a rattle it sounds like a worn pully bearing scrawnching or something??
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aceman
Joined: Sun 01 Jun, 2008 11:16
Posts: 1479

  M roadster S50
Location: Wakefield

Post by aceman »

Water pump :?:
Aceman

Arctic Silver '98 Z3M

Previously;
Bright RED '99 Z3 2.8

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Mike Fishwick
Joined: Fri 19 Jun, 2009 10:27
Posts: 2093

  Z3 roadster 2.8
Location: Daglan, France

Diy

Post by Mike Fishwick »

USe your head and hands - take the fan off, and see if the noise goes. Then remove the belt and run the engine for a VERY short period to see if it comes frm the water pump.

My bet is the fan coupling bearing, a small amount of wear allowing the steel plates to touch each other. Is there any backwards and forwards play in the fan blades?
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Ian_C
Joined: Sun 10 Dec, 2006 20:10
Posts: 2415

  Z3 roadster 2.8
Location: Lytham St Annes

Post by Ian_C »

I had similar symptoms and it turned out to be the water pump.
Current...1998 ///M Coupe
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Previously...1997 Z3 2.8
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Mike Fishwick
Joined: Fri 19 Jun, 2009 10:27
Posts: 2093

  Z3 roadster 2.8
Location: Daglan, France

Details

Post by Mike Fishwick »

I do wish people with this type of question would add a few details, such as engine size, age, and mileage. We are not clairvoyant! Ok - this is a 2.8, but age and mileage tell a lot.

For example, 70,000 miles seems to be about the average life of a viscous fan coupling, or less is the engine has had a lot of short runs, as it has to fill up after standing for a while. A water pump usually lasts for about 100,000 miles, unless the plastic impeller has come loos and is making a noise, but in this case the coolant temperature would tend to increase at idle.

Yes - it could be a water pump, but it could also be a fan coupling or a belt tensioner pulley bearing etc.

Chaging things because someone on the internet thought it 'may' be the answer is expensive, and usually inconclusive - do things one step at a time, and try to find the cause before spending your money.
Z3cade
Joined: Sat 09 Jan, 2010 18:18
Posts: 2634

  M roadster S50
Location: Peterborough

Post by Z3cade »

The car is a 2000 2.8 and done 97k. Full service history. Its going into my local garage this week so i will keep posted and let people know what it is.

The fan bearing sounds like what it could be as it seams to be coming from it.
Since the noise has started the temp gauge hasnt shown any signs of high temp at idle or while driving.
Where abouts is the water pump located?
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topfuelking
Joined: Sat 26 Feb, 2005 15:13
Posts: 674

  Z3 roadster 2.8 supe
Location: Pays de la Loire

Post by topfuelking »

water pump
THANKS MARC
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Courageous
Joined: Wed 13 Jan, 2010 19:22
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  Z3 roadster 2.0
Location: Rosas, Spain
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Post by Courageous »

Stop Mike baiting everyone! :D

Its the tyre pressure.........
In the land of the pigs the butcher is king.
Z3cade
Joined: Sat 09 Jan, 2010 18:18
Posts: 2634

  M roadster S50
Location: Peterborough

Post by Z3cade »

Yep it was the water pump!! Thanks for the info guys but its all fixed now and sounds much healthyer! :D
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Z3cade
Joined: Sat 09 Jan, 2010 18:18
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  M roadster S50
Location: Peterborough

Re: Details

Post by Z3cade »

Mike Fishwick wrote: A water pump usually lasts for about 100,000 miles.
You wernt far off the water pump millage with mine at 97k. :wink:
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aceman
Joined: Sun 01 Jun, 2008 11:16
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  M roadster S50
Location: Wakefield

Post by aceman »

Do I get a prize for guessing first :D
Aceman

Arctic Silver '98 Z3M

Previously;
Bright RED '99 Z3 2.8

Rocking seats ? You need seat bushes click HERE
Z3cade
Joined: Sat 09 Jan, 2010 18:18
Posts: 2634

  M roadster S50
Location: Peterborough

Post by Z3cade »

aceman wrote:Do I get a prize for guessing first :D
You get a happy spining face :squeeze: :thumb:
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