Omega Owners Forum - Oil in coolant...

Sammo Newbie Offline Posts: 15 Salisbury Gender: Drives: 2002 CDX 2.2 Auto Estate	Oil in coolant... 11. Apr 2011 at 17:28 ARRRRGGGGHHH Afternoon all! Found Oil in my coolant tank today, car has been misfiring on cylinder 1 and cylinder 4. Massive built up of pressure in cooling system. Indication of headgasket failing?? Even though headgasket was changed 20,000 miles ago ?
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Jimbob Global Moderator Admin Team Offline Third nipple removal completed succesfuly Posts: 20462 Chester / Flintshire Gender: Drives: 52 3.2 MV6 Estate & 98 3.0 MV6 Manual Estate	Re: Oil in coolant... Reply #1 - 11. Apr 2011 at 17:29 Nope, most likely your oil cooler gone, much easier job
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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Oil in coolant... Reply #2 - 11. Apr 2011 at 17:34 Jimbob wrote on 11. Apr 2011 at 17:29: Nope, most likely your oil cooler gone, much easier job Hummm on a 2.2, i'd say it is HG
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Jimbob Global Moderator Admin Team Offline Third nipple removal completed succesfuly Posts: 20462 Chester / Flintshire Gender: Drives: 52 3.2 MV6 Estate & 98 3.0 MV6 Manual Estate	Re: Oil in coolant... Reply #3 - 11. Apr 2011 at 17:34 note to self : check profiles
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tunnie

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London, W3
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Drives: 2.2 CD (LPG'd) & BMW R1200 GS

Re: Oil in coolant...
Reply #4 - 11. Apr 2011 at 17:37

Jimbob wrote on 11. Apr 2011 at 17:34:

note to self : check profiles Embarrassed

Yeh I never make mistakes like that Roll Eyes

What was history on the HG change? Did it over-heat? Was the head skimmed?

Coolant mix of 50/50 with anti-freeze & regular changes (2 years max) is critical on 4pots.

Father T's 2.2 was dealer serviced, his HG failed at 95k.

My 2.2, DIY serviced, is still on its original HG at 153k

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Do you break V6's as often as TheBoy? Then you need tunnie's towing services, recovery costs are just the humiliation of being towed by 2/3's of an engine

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Sammo Newbie Offline Posts: 15 Salisbury Gender: Drives: 2002 CDX 2.2 Auto Estate	Re: Oil in coolant... Reply #5 - 11. Apr 2011 at 17:42 Umm last HG was done at 60,000 approx 3 years ago, Car is constantly overheating, once pressure has been released out of the coolant system its fine. Head has been changed at some point, only just found out that its a 2.0 head!
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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Oil in coolant... Reply #6 - 11. Apr 2011 at 17:44 Sammo wrote on 11. Apr 2011 at 17:42: Umm last HG was done at 60,000 approx 3 years ago, Car is constantly overheating, once pressure has been released out of the coolant system its fine. Head has been changed at some point, only just found out that its a 2.0 head! Does not give you confidence does it
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Sammo Newbie Offline Posts: 15 Salisbury Gender: Drives: 2002 CDX 2.2 Auto Estate	Re: Oil in coolant... Reply #7 - 11. Apr 2011 at 17:45 Must add that car run's rough on idle, misfires and gets MIL/ems light on, but when driving it runs fine, Gearbox seems to be slipping at 5,000.....That linked to HG prob?
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Sammo Newbie Offline Posts: 15 Salisbury Gender: Drives: 2002 CDX 2.2 Auto Estate	Re: Oil in coolant... Reply #8 - 11. Apr 2011 at 17:46 No, no confidence, given it has a pretty substantial service history and ownership.
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: Oil in coolant... Reply #9 - 11. Apr 2011 at 18:57 Sounds HG. Slipping autobox, depends how long its been driven like that. Catch it quickly, they can normally be sorted, otherwise, new box. Unrelated to HG
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Abiton

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Drives: Mk2 Golf, but the missus has a '96 2.0 'Select' woohoo!

Re: Oil in coolant...
Reply #10 - 11. Apr 2011 at 19:10

Take the sparkplugs out a few hours after it has last run, cleaning out any fluid around them first.

Then shine a little bright torch down the holes, looking for possible coolant sitting on piston crown(s).

If you see some fluid, sample it with a clean white rag on the end of a suitable stick. Smell, colour, taste for coolant.

Is the 2.0 head (itself) actually different in any way from the 2.2? Undecided

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« Last Edit: 11. Apr 2011 at 19:10 by Abiton »

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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Oil in coolant... Reply #11 - 11. Apr 2011 at 19:44 Abiton wrote on 11. Apr 2011 at 19:10: Is the 2.0 head (itself) actually different in any way from the 2.2? No bolt holes for the coil pack, can cause issues with it working loose due to vibration.
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v6alex Junior Member Offline Posts: 78 Drives: omega mv6	Re: Oil in coolant... Reply #12 - 14. Apr 2011 at 12:38 I thought the 2.0 was belt driven timing and the 2.2 was chain driven? So how do the heads interchange?
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Jimbob Global Moderator Admin Team Offline Third nipple removal completed succesfuly Posts: 20462 Chester / Flintshire Gender: Drives: 52 3.2 MV6 Estate & 98 3.0 MV6 Manual Estate	Re: Oil in coolant... Reply #13 - 14. Apr 2011 at 12:58 v6alex wrote on 14. Apr 2011 at 12:38: I thought the 2.0 was belt driven timing and the 2.2 was chain driven? So how do the heads interchange? ALL petrol omegas are Belt driven ( other vauxhall 2.2 engines were chain, like vectra)
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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Oil in coolant... Reply #14 - 14. Apr 2011 at 14:21 v6alex wrote on 14. Apr 2011 at 12:38: I thought the 2.0 was belt driven timing and the 2.2 was chain driven? So how do the heads interchange? As above, all Omega petrol engines are belt driven. Its not same 2.2 as fitted to Vectra/Astra ect...
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