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1

Omega General Help / Re: Head gasket failure? / coolant leak problem

« on: 18 January 2009, 17:30:59 »

Thanks for that.

Obviously, I don't want to hear that it is the head gasket, even though I fear the worst, so if anyone has any other thoughts or alternatives to consider, please say!

2

Omega General Help / Head gasket failure? / coolant leak problem

« on: 17 January 2009, 19:16:41 »

I have a 2003 Omega 2.2 CDi, petrol, automatic. 73k miles, fully serviced and well looked after by me from 6 months old.

I have a problem with coolant disappearing, but there are no leaks visible, and no mixing of oil and water in the engine. Slight misfire on starting up when cold, runs perfectly when warm. Engine management light comes on intermittently, usually triggered by misfiring, sometimes EML stays on afterwards, sometimes goes off. Mechanic has diagnosed EML as triggered by exhaust mixture sensor.

Could this be coolant entering exhaust system via manifold and causing sensor to trigger EML? - ie, as a result of the head gasket leaking.

Any other possibilities?