Water Problems...

[neil.b]

Had a coolant leak yesterday, fairly substantial one resulting in temperatures on the wrong side of 100 again.

Got home, let the car cool down and checked the water. Topped it up a bit but strangely the level was not as low as the amount of leaked water would suggest.

My guess is I now have air in the system somewhere. Would running the engine with the cap off force the air out, or would this be a very silly thing to do? I don't mean driving, just let it tick over for a while...

Bloody car....

Its booked in to have a replacement radiator in a couple of days, just trying to get a temporary fix until then...at the moment i've left the damn thing in the garage....

[aromaT]

There will be ableed valve (or maybe even two) somewhere.

Unfortunately Lotus Elises are my area of expertise..I just drive the Tamora!

I wouldn't let it idle with the cap off if you think you may have an airlock - it can interupt the flow and create hot spots. Airlocks usually depend upon the pipe routing and heights, so some cars *(early elises are the worst!) are very prone.
cheers