Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: bob.dent on 17 July 2006, 09:46:41

Title: Buzzing noise
Post by: bob.dent on 17 July 2006, 09:46:41
Morning guys

Noticed a weird sort of buzzing noise coming from under the bonnet yesterday (and no, I haven't got an infestation of wasps or bees! ;D). Opened bonnet for closer inspection and it appeared to be coming from the plenum area. Revving the engine made it stop and start but back at idle it's there all the time. Otherwise, engine is running pure as silk.

Any ideas anyone?
Title: Re: Buzzing noise
Post by: nixoro on 17 July 2006, 11:05:52
Possible manifold leak could cause a popping noise but not sure with regards buzzing.

HTH
Title: Re: Buzzing noise
Post by: bob.dent on 17 July 2006, 12:16:41
Quote
Possible manifold leak could cause a popping noise but not sure with regards buzzing.

HTH

Defo not manifold leak - really hard to describe but buzzing is the closest word I can think of to describe it. Doesn't sound serious but then I've no idea what it is :-/
Title: Re: Buzzing noise
Post by: nixoro on 17 July 2006, 12:22:41
Can you Identify for definate where the buzzing is coming from only I am thinking it could be the aux tensioner bearing causing the noise.
Title: Re: Buzzing noise
Post by: Martin_1962 on 17 July 2006, 12:43:00
Is it a rapid ticking sound?
Title: Re: Buzzing noise
Post by: nixoro on 17 July 2006, 12:55:34
Quote
Is it a rapid ticking sound?

Thats what I was thinking aswell.
Title: Re: Buzzing noise
Post by: bob.dent on 17 July 2006, 13:12:55
Quote
Is it a rapid ticking sound?

Would you believe it - just been out to check it to see if I get locate exact location of the "buzzing" and it's stopped!! However, there is a rapid ticking noise from same area. What would this be?
Title: Re: Buzzing noise
Post by: nixoro on 17 July 2006, 13:20:10
Where is the noise coming from?

If behind the cambelt cover it could be the tensioner.
If from the top could be a warn tappet/follower.
If from aux belt area again could be the tensioner.

HTH
Title: Re: Buzzing noise
Post by: STMO123 on 17 July 2006, 13:24:12
Its a bomb ::)
Title: Re: Buzzing noise
Post by: bob.dent on 17 July 2006, 13:26:48
Quote
Where is the noise coming from?

If behind the cambelt cover it could be the tensioner.
If from the top could be a warn tappet/follower.
If from aux belt area again could be the tensioner.

HTH

Will check it out later - work getting in the way at the moment! >:(
Title: Re: Buzzing noise
Post by: bob.dent on 17 July 2006, 13:28:01
Quote
Its a bomb ::)

 ;D ;D ;D

Certainly goes like one!! 8-)
Title: Re: Buzzing noise
Post by: nixoro on 17 July 2006, 13:28:59
What engine is it?
Title: Re: Buzzing noise
Post by: bob.dent on 17 July 2006, 13:34:33
Quote
What engine is it?

1999 CD Estate 2.5 V6
Title: Re: Buzzing noise
Post by: Marks DTM Calib on 17 July 2006, 13:45:41
Could simply be a ticking injector.....
Title: Re: Buzzing noise
Post by: nixoro on 17 July 2006, 13:52:50
Quote
Could simply be a ticking injector.....

Never thought of that one if this is the case would it need to be replaced.
Title: Re: Buzzing noise
Post by: bob.dent on 17 July 2006, 13:54:55
Quote
Could simply be a ticking injector.....

With my limited knowledge (but expanding thanks to this site), I was thinking along those lines.

I'll have a good route around under the bonnet when I've finished work.

Thanks for your help so far guys [smiley=thumbup.gif]
Title: Re: Buzzing noise
Post by: Marks DTM Calib on 17 July 2006, 13:57:25
No, quite normal, some Forte fuel treatment might help it a bit, it is only a solenoid at the end of the day
Title: Re: Buzzing noise
Post by: sounds2k on 17 July 2006, 14:02:37
leaky EGR valve and/or gasket?
Title: Re: Buzzing noise
Post by: bob.dent on 17 July 2006, 14:07:55
Quote
leaky EGR valve and/or gasket?

Forgive my unashamed ignorance, but what's EGR? :-/
Title: Re: Buzzing noise
Post by: nixoro on 18 July 2006, 12:03:46
I think if correct it means exhaust gas recirculation or something like that.

Someone will correct me if I am wrong  :)
Title: Re: Buzzing noise - update
Post by: bob.dent on 18 July 2006, 13:22:54
Typical, it's like going to see your doctor - as soon as you try and diagnose the problem it bl**dy stops :-?  Anyway I'm booking the barge in for a 10k service next week so I'll get them to check it out then. Thanks for all the advise though guys, I'm certainly learning what different parts are called under the bonnet even if I don't know how to fix 'em ;) and it's really useful as I can speak the same language as my mechanic :)