Even with a bad cap, it shouldn't be sucking the hose inwards - bad hose for
one. Overflow vent is definitely the next to check. Yes, there is a slight
vacuum effect in the cooling system (hot/cold does that).
- Bernd
-----Original Message-----
From: Terrible Tom [mailto:silvereightynine@aol.com]
Sent: Saturday, July 19, 2008 12:26 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: Re: DML:OT Neon ?
David Gersic wrote:
> On Saturday 19 July 2008 09:53 am, Jay & Dana wrote:
>
>>When at normal operating temperature my wife's 95 Neon's rad hoses are
>>fine. But in the morning when cold both rad hoses and heater hoses are
>>collapsed.
>
>
> Failed spring in the lower radiator hose, assuming that's the side that
the
> water pump sucks from on a Neon. Not sure about the heater hoses, though,
> should those have springs in them too?
>
> Plugged radiator maybe? Can't move coolent through it, but there's enough
> expansion when the engine gets warm to puff the hoses back out, then
collapse
> them when it gets cold and shrinks again.
>
> If you open the cap when the engine is cold, then start it and let it warm
up,
> can you see the coolent circulating?
>
Bad radiator cap
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