Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: plym ian on 08 April 2013, 21:37:34

Title: exhaust fumes from expansion tank
Post by: plym ian on 08 April 2013, 21:37:34
is that a sure sign of hg failure and also water loss(no visable signs of leak) and temp rising and falling. if so I'm going to be busy the next day or so :'(

2.0 pfl if that helps

also do I have to replace head bolts what would happen if I didn't replace them?
Title: Re: exhaust fumes from expansion tank
Post by: dazzerM on 08 April 2013, 22:33:59
It could be something as simple as an airlock, similar symptoms...

Out of interest have you changed/flushed the coolant recently  :-X
Title: Re: exhaust fumes from expansion tank
Post by: Webby the Bear on 08 April 2013, 22:36:37
Shouldn't you do a leak down test to confirm it's the HG?
Title: Re: exhaust fumes from expansion tank
Post by: dbug on 09 April 2013, 00:57:17
If you can smell exhaust fumes in your expansion tank, a compression test would confirm hg failure ;)
Title: Re: exhaust fumes from expansion tank
Post by: Gaffers on 09 April 2013, 08:18:30
When you torque the bolts they stretch so if you reuse the old ones you are asking for trouble.

Plenty of tests you can do to confirm, a cold and warm leak-down test is a good start.  On the 2.0 a HG repair is pretty easy and can be done in a day (providing the head doesn't need a little skim)
Title: Re: exhaust fumes from expansion tank
Post by: plym ian on 09 April 2013, 12:25:34
right went out to have a look today filled the expansion tank up and within 20mins on tick over it was almost empty no visable signs of a leak anywhere and I have a grey blue smoke from exhaust. I only changed hg less than 2 years ago but all signs lead to hg :(
Title: Re: exhaust fumes from expansion tank
Post by: Gaffers on 09 April 2013, 12:46:49
Is there more moisture coming from the exhaust than usual? If so with the blue smoke coming from the exhaust I would suspect the HG. 
Title: Re: exhaust fumes from expansion tank
Post by: plym ian on 09 April 2013, 13:08:25
Is there more moisture coming from the exhaust than usual? If so with the blue smoke coming from the exhaust I would suspect the HG.
yes there is a small amount of water on floor :(