Radiator and cap

Tiny
CHOPS5787
  • MEMBER
  • 1961 CHEVROLET BEL AIR
  • V8
  • 2WD
  • AUTOMATIC
  • 300 MILES
Why would I still have pressure on my radiator cap after the car has not been run in approx 2 days. It is a show car and does not get driven on a daily basis. The other day I went to check fluid level in radiator and when I released the cap it pushed out anti-freeze although not hot obvisously. It has a new cap.
Thursday, July 7th, 2011 AT 9:13 AM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
I would say that the new cap is faulty, take it to a radiator shop or work shop and get it tested, try this first as there is nothing that would keep pressure up in the system with a cold engine.
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Thursday, July 7th, 2011 AT 9:34 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It also can be the wrong cap. It may be a cap for a closed system and you are runing one without, or it's the other way around.
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Wednesday, July 20th, 2011 AT 2:50 PM

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