2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

lots of pressure

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Old Feb 5, 2005 | 11:32 AM
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xshawn801x's Avatar
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lots of pressure

my car is building up a lot of pressure in the radiator and the hoses. if i take the cap off in he morning and watch the coolant there is no bubbles but after i drive it for a bit and then try to take he cap off it shoots coolant everywhere any one know what is wrong
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Old Feb 5, 2005 | 11:33 AM
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Tofuball's Avatar
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It's supposed to do that.

Hence the warning on the cap: Do not remove when hot or hot coolant comes out and scalds you.
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Old Feb 5, 2005 | 11:51 AM
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its over filling my overflow and it just seems like to much pressure
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Old Feb 5, 2005 | 11:53 AM
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Rich turbo RX-7's Avatar
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After you drive it does it try to spit coolant out the reserve tank too?
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Old Feb 5, 2005 | 11:55 AM
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Im having the same problem ive been told lots of things but none have worked so far.
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Old Feb 5, 2005 | 11:58 AM
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today was the first day it did that it over filled my overflow
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Old Feb 5, 2005 | 11:59 AM
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Rich turbo RX-7's Avatar
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the only thing i havent checked is the water pump itself cause the car is now parked and getting a single TO4 turbo added to it so i havent got a chance to see if the water pump does the trick or not.
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Old Feb 5, 2005 | 12:00 PM
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Rich turbo RX-7's Avatar
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have you flushed out your cooling ssystem latley?
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Old Feb 5, 2005 | 12:02 PM
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mine had tons of deposits in the cooling system which i thought was my problem but it wasnt but i would have the cooling system flushed real good and run a good cleaner through the system as a first before i went tearing the water pump off.
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Old Feb 5, 2005 | 12:04 PM
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What year is your car? N/A TURBO?
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Old Feb 5, 2005 | 12:19 PM
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sounds like a classic case of a broken water jacket in one of your irons, after starting the car cold grab the upper radiator hose with the cooling system sealed and see how long it takes to feel like it is pressurizing like a balloon, if it takes less than a minute then i would have to say it is time to tear down the engine. there is no other reason that much pressure could be getting into the cooling system aside from gasses from the combustion chamber.
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Old Feb 5, 2005 | 12:38 PM
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Cooling system troubleshooting: http://www.aaroncake.net/rx-7/cooling.htm
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