Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Shark1e on 07 September 2010, 20:09:54

Title: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 07 September 2010, 20:09:54: hi all,

has anyone got a rear view picture of the 2.5td engine? i have a leak from a half moon feeling hole at the rear of the head,

as you look at the bulk head, on the right side/ end of the rocker box, feel down behind and just on the rocker box join and the head, is the half moon feeling hole, i have oil leaking from there but only dripping slightly and oil level last for some time,

been to vauxhall but they can't see what may missing from the hole infact can't even see the hole on the computer but came out and agrees something should go in there but no idea what >:(

so any ideas greatly appreciated

thanks rob
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Kneepad on 07 September 2010, 20:31:38: Is this the half moon you mean.

(http://a.imageshack.us/img96/9158/covernandgasket.jpg)
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 07 September 2010, 20:40:29: i reckon so mate, did wonder if it was part of the gasket due to the general location,

where did you get the diagram from if i can ask, my tis cd is not as good as that.

thanks rob
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: MickAP on 07 September 2010, 20:41:11: That half moon shape's at the front of the engine, he means at the back, I think.
Ask Elite Pete about it, he's fast becoming an expert ::) on this engine. He's recently part stripped one to do the timing chain if I remember.

Mick ;)
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Kneepad on 07 September 2010, 20:44:13: Quote
That half moon shape's at the front of the engine, he means at the back, I think.
Ask Elite Pete about it, he's fast becoming an expert ::) on this engine. He's recently part stripped one to do the timing chain if I remember.

Look where it says number 7 that's a half moon at the back.
Mick ;)
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 07 September 2010, 20:49:06: just read on tis to get a small mirror and check it is in correct when replacing the gasket/cover'
looks like it will need to come off and reseated or replaced.

thanks rob
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Kneepad on 07 September 2010, 20:52:02: Quote
i reckon so mate, did wonder if it was part of the gasket due to the general location,

where did you get the diagram from if i can ask, my tis cd is not as good as that.

thanks rob

I got it from The Range Rover manual it uses the same BMW engine.

That rear half moon is a known leak point, often the new gasket is dislodged when the cover is being put back on.

:y
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 07 September 2010, 20:55:38: urrrrrm many thanks guys appreciated loads.

rob :y
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Kneepad on 07 September 2010, 20:57:51: Quote
hi all,

has anyone got a rear view picture of the 2.5td engine? i have a leak from a half moon feeling hole at the rear of the head,

as you look at the bulk head, on the right side/ end of the rocker box, feel down behind and just on the rocker box join and the head, is the half moon feeling hole, i have oil leaking from there but only dripping slightly and oil level last for some time,

been to vauxhall but they can't see what may missing from the hole infact can't even see the hole on the computer but came out and agrees something should go in there but no idea what >:(

so any ideas greatly appreciated

thanks rob

So he was looking for a hole on his computer. ;D ;D
It's enough to break your heart. ;D ;D ;D ;D ;D
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 08 September 2010, 16:09:47: yes mate it was supposed to be one of these all singing and dancing jesus computers = holy lol

should be able to sort that what you sent once it all down :y ;)
thanks
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: shane1000 on 08 September 2010, 19:35:46: i'm lost...... who's computer is leaking ???
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Kneepad on 08 September 2010, 19:54:44: Vauxhall Dealer, couldn't find a hole in it. ;D
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 08 September 2010, 22:46:52: didn't say his computer was leaking ::) ::) ::) :D we said he couldn't find a hole on it :-/ ;D ;D ;D

bet your real confused now lol
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 11 September 2010, 13:16:02: well after many choice words about the car designing industry mainly vauxhall, i have found the problem with the oil leak,
it was the half moon gasket on the rear edge, also about half way along back edge between the half moon and the rightside of the cover, i found the gasket was ripped in half, so must have been done with the last owner not refitting it after some engine work was done by him.
struggled to get the gasket without ordering it, but good old chester exhaust supplies (CES) had one in Crewe,

Part number = RC558S £20.03 inc vat,

many more choice words later and many ripped latex gloves, the job is done and no leaks as yet.

so once again many thanks to all who helped out and it was really appreciated.
:y :y :y :y :y :y :y
Rob
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Kneepad on 11 September 2010, 15:23:15: Well done Shark1e, Nice to hear a success story. :y :y
Title: Re: omega 2.5td oil leak rear of rocker box / head
Post by: Shark1e on 12 September 2010, 16:44:02: thanks to you too big fella, nice one :y