Join Date: Jun 2008
Location: Eastbourne, East Sussex, UK
Car Year: S
Car Model: Forester GLS
thanks for speedy replies couple of further points,
when I mentioned about the steam etc in the first post it was defo. liquid (not gas) coming out the top of the expansion tank as it was all over the engine.
The cooling system hasn't been serviced but I have topped it up recently.
Having read further posts I've given the rad cap a clean (there was grease and two tiny bits of 'dirt' (actually looked like metal filings).
I just took the car for a 5 min run to get it up to temp. Topped up the coolant (via the expansion tank, suprisingly only needed a little) and gave the top hose a few squeezes with the rad cap off. A few bubbles came through, not loads, but some never the less. Then replaced the rad cap and started the engine to leave it idling and watched the fluid level in the expansion tank. I gave the hose another couple of squeezes and a few more bubbles came through, I then left it and didn't see any more bubbles coming through but tbh. I only watched for less than a minuet. I'll try and get a buit more time to observe it tommorow, (would I expect to see lots of bubbles of just the odd one or two? I guess it depends on revs, higher revs = more bubbles)
I guess if it is worst case scenario and HG faliure then gasses could be escaping into the system, forcing the coolant up and overfilling but I'm still bemused by the temp gague showing normal. Or is that actually proving that the coolant's not over heating but is most likely being forced out by gases?
Are there any other obvious signs of the dreaded HD faliure that I might find ?
Last edited by Kelleher; 02-19-2010 at 09:29 AM.