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please help. radiator hose flat!!


Every time this has happened to me its been a bad radiator cap,As the engine cools the coolant shrinks causing a vacuum to form and collapsing the hose(lower hose usually)
 
Replace the thermostat if a new radiator cap doesn't fix it.

I always drill a 1.8" hole in my new T-stat, so it can always flow "some".
 

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