Hi,
When I shut off my 90 TA, I'll get a somewhat violent bubbling into the overflow tank, usually when the temp is above 190* (I can not think of it ever happening at lower temps). I've gone through various checks for common causes (compression, no oil in water, no water in oil, etc) with no result. It went away for about a year after changing upper and lower radiator hoses, but has since come back and nothing I do will stop it.
There is NO bubbling when the engine is running.
Anyone have any suggestions?
TIA, Anthony