Thanks, Toby. What's odd, is that in this case, the hose is collapsing
while under pressure.
- Bob
Toby B wrote:
>
> A collapsing hose
> will balloon out once the cooling system pressurizes. The symptom of
>a
> collapsing hose is initial overheating, then normal cooling once the
> cooling system has pressure. THe water pump doesn't generate much
> suction, certainly not 4lbs or 14lbs (depending on your cap!)- the hoses
> collapse when the engine cools, everything contracts, and the hose
> collapses before the cap can pull a bit of coolant from the catch tank.
> It's much worse in a cooling system that keeps air in it (like the
> Pinto) than a total evacuation system that has only coolant (like the
> roadster) as air expands and contracts a lot, while water and solid
> components contract a lot less...
> As to overheating causes, I'd definately go thru the FAQ'ed list and
> get this solved, 'cause overheating will kill your head in short order.
> I had a head gasket failure that didn't show bubbles at idle, but only
> leaked under load. Analyzing the gasses that come out of the catchtank
> is a sure check- any CO or hydrocarbons, and something's leaking. Mine
> was bad enough, tho, that you could smell it!
> Good luck,
> Toby
>
> If the spring
> > rusts out or is missing then the hose would indeed collapse due to the
>suction
> > caused by the waterpump (when revving).
> >
> >
--
- R.W. Mann & Company, Inc. > Airline Industry Analysis
Port Washington, NY 11050 > tel 516-944-0900, fax -7280
mailto:Bob_Mann@RWMann.com > URL http://www.RWMann.com/
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