Omega Owners Forum - head gasket?

rjb6323 Newbie Offline Posts: 16 wiltshire Gender: Drives: 3.2 v6 special (ex police)	head gasket? 13. Jan 2010 at 22:19 hi can anyone please help i have a 53 plate 3.2 v6 omega and have noticed i have pressure in the coolant system, and loss of coolant. my first guess is the head gasket gone but i have no loss of power, no sludge in the oil or coolant and no white smoke. are there any other faults that could cause this. all comments are very welcome thankyou bob
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rustym95 Omega Knight Offline carn't get up dont go out!! Posts: 1448 Rotherham south yorks Gender: Drives: 2.0i 16v CD Estate 95	Re: head gasket? Reply #1 - 13. Jan 2010 at 22:23 you do get pressure in the water tank, may be lossing water some were. check all round and look on floor were engine is.
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rjb6323 Newbie Offline Posts: 16 wiltshire Gender: Drives: 3.2 v6 special (ex police)	Re: head gasket? Reply #2 - 13. Jan 2010 at 22:33 this is more pressure than i would expect, if i take the cap off and start up you can see it straight away
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rustym95 Omega Knight Offline carn't get up dont go out!! Posts: 1448 Rotherham south yorks Gender: Drives: 2.0i 16v CD Estate 95	Re: head gasket? Reply #3 - 13. Jan 2010 at 22:38 may have an air lock, only other way to find a leaking head is pressure test the pistons.
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rustym95 Omega Knight Offline carn't get up dont go out!! Posts: 1448 Rotherham south yorks Gender: Drives: 2.0i 16v CD Estate 95	Re: head gasket? Reply #4 - 13. Jan 2010 at 22:49 is there pressure in oil?
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Elite Pete Omega King Offline My spider senses are tingling Posts: 17813 Northwich/Chester Gender: Drives: Facelift Wheezel,Breaking 2001 MV6	Re: head gasket? Reply #5 - 14. Jan 2010 at 09:55 rustym95 wrote on 13. Jan 2010 at 22:49: is there pressure in oil? I hope so
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dbug Omega Lord Offline Dont knock Linux! Posts: 7822 Northants Gender: Drives: 98 V6 Elite auto	Re: head gasket? Reply #6 - 14. Jan 2010 at 14:18 rustym95 wrote on 13. Jan 2010 at 22:38: may have an air lock, only other way to find a leaking head is pressure test the pistons. ??
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tunnie

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

Re: head gasket?
Reply #7 - 14. Jan 2010 at 14:26

ok couple of easy things first before all this piston testing stuff....

After a run, take off the expansion cap and sniff, does it smell of petrol?

Any excessive white smoke out of the exhaust?

Check the HBV (heater by-pass valve) passenger side, rear of the block, it shunts water to the heater matrix / engine block, this is a common failure. Check that for leaks.

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« Last Edit: 14. Jan 2010 at 14:26 by tunnie »

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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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: head gasket? Reply #8 - 14. Jan 2010 at 14:26 dbug wrote on 14. Jan 2010 at 14:18: rustym95 wrote on 13. Jan 2010 at 22:38: may have an air lock, only other way to find a leaking head is pressure test the pistons. ?? My rusty translator suggests he means compression test the cylinders
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dbug

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Drives: 98 V6 Elite auto

Re: head gasket?
Reply #9 - 14. Jan 2010 at 14:30

tunnie wrote on 14. Jan 2010 at 14:26:

dbug wrote on 14. Jan 2010 at 14:18:

rustym95 wrote on 13. Jan 2010 at 22:38:

may have an air lock, only other way to find a leaking head is pressure test the pistons.

??

My Trusty translator suggests he means compression test the cylinders

Thanks Tunnie, never heard of pressure testing pistons!! Cylinder compression test may not pick up dodgy head gasket if coolant leak external to cylinders though!! Would have thought it more sensible to pressure test cooling system Wink

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1998 Elite 2.5V6 Auto, 1967 Triumph TR4A, 1998 Elite 2.5V6 Auto Estate

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