Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: andymp on 23 January 2014, 13:30:37

Title: 2.2 dti screechy turbo
Post by: andymp on 23 January 2014, 13:30:37

Hi. My 2.2 dti makes a loud screechy noise, that appears to follow the turbo. Although it has no EML and it seems to boost as it should. I have changed the turbo, downpipe gasket and manifold gasket, and it still makes the same noise...  :-\

The pipes to and from the intercooler look free from splits or oily marks from an air leak, as does the intercooler. Does anybody know of any common problems that cause this? Or a way to pressurise the inlet to find out?

Thankyou in advance.

Title: Re: 2.2 dti screechy turbo
Post by: henryd on 23 January 2014, 14:57:11

Landrover TD5's do this when the inlet manifold warps slightly causing a small boost leak,maybe something similar occurring here ???

Title: Re: 2.2 dti screechy turbo
Post by: martin42 on 23 January 2014, 14:58:34

My zafira 2.0 dti used to make that noise,never could find out what it was.

Title: Re: 2.2 dti screechy turbo
Post by: andymp on 23 January 2014, 15:29:45

After something of an epiphany, I used the compressor to pressurise the inlet and a screech came from the inlet side, poured water on it and the inlet manifold gasket bubbled...

Title: Re: 2.2 dti screechy turbo
Post by: andymp on 23 January 2014, 15:34:56

Excellent guess, Henryd...  :D

Title: Re: 2.2 dti screechy turbo
Post by: martin42 on 23 January 2014, 15:59:24

Whats caused it to do that ?

Title: Re: 2.2 dti screechy turbo
Post by: andymp on 23 January 2014, 16:20:19

Admittedly, last time I cleaned the swirl block, I was given the wrong gasket so I reused the old one... a new one on order from the stealership for tomorrow...

Title: Re: 2.2 dti screechy turbo
Post by: martin42 on 23 January 2014, 16:31:21

Well at least i now know what it was  :y

Title: Re: 2.2 dti screechy turbo
Post by: henryd on 24 January 2014, 09:19:22

Quote from: andymp on 23 January 2014, 15:34:56

Excellent guess, Henryd...  :D

Result,lets hope it is that :y :y

Title: Re: 2.2 dti screechy turbo
Post by: andymp on 24 January 2014, 19:05:59

Got a gasket, £6.64 from the stealers... what a difference. No screech, no vibration at low revs under power, no flat spot at 1500 rpm, no smoke, quieter...  :D

Title: Re: 2.2 dti screechy turbo
Post by: henryd on 25 January 2014, 11:51:14

Quote from: andymp on 24 January 2014, 19:05:59

Got a gasket, £6.64 from the stealers... what a difference. No screech, no vibration at low revs under power, no flat spot at 1500 rpm, no smoke, quieter...  :D

Happy days :y :y :y