My radiator stays pressurized overnight.. Why would this be. If i remove the cap 12hrs later its still pressured. I thought t was a radiator cap problem? But the cap it just new

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Jay: 0431404607

I'd go see your GP.

You could have a serious case of sleep driving, check the odometer before and after a sleep.

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Carl
Previous Owner & Driver of 1 Morris "It's not a Cooper!!" 850

What pressure is your radiator cap? It could be a higher pressure (standard cap should be a 13lb) one and it may not be letting your cooling system normalize out. Dunno if that could affect it but I can't think of anything else for the moment.

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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina