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#1
06-22-2000, 11:10 AM
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just replaced myu radiator, all hoses and expansion tank. Retained the exp tank cap because it is only 4 months new( so i was told)....
the upper radiator hose, i observe to collapse when engine cools off. SOmehow vacuum is trapped. Have seen posts about a possible defective cap, but would like to know if there may be other causes. thx emmy 91 560sel 
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#2
06-22-2000, 09:28 PM
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Replace the cap. There is a small check valve in there that is stuck.
------------------ Benzmac: Donnie Drummonds 1992 500E (very soon I hope  1981 280GE SWB ASE CERTIFIED MASTER AUTO TECHNICIAN SERVICE MANAGER FOR 14 BAY FACILITY MERCEDES SPECIALIST 8 YRS PARTNER IN MERCEDESSHOP.COM
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