Pressure in the cooling system?
#1
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Pressure in the cooling system?
Buddy has a 85 with a 13b 4 port and he called me because his cooling system is presurizing and going past the cap in to the overflow tank. When he runs it with the cap off he has bubbles coming up the the top continously. I think it could be a inner water o-ring giving way, but he has clean exhaust....it does idle rough at stop lights.
Any clues?
Any clues?
#6
Depending on how well he kept up with his car, it is possible to have a bad thermostat that has locked shut or partly open, but like Partsguy said...start simple these are things that really need replacing by this time anyways and will help with cooling after the problem is resolved. I would change the radiator cap along with a new thermostat both items will cost you about $30 in total. Go to the dealer for the thermostat. I had a 90 GXL that blew a water seal and blew a split in the top radiator hose caused by the pressure build up. If it has constant bubbles coming from it with the cap off I would say that the seal is shot and letting compression in the water jacket. If you pull the spark plug thinking you might see some water if the seal is blown this will not work due to the fact the water is turning to steam and burning off. Which is why 82streetracer was saying to taste the tail pipe, I would just go back there and take a breath and see if you smell coolant, it will smell sweet ;] Good luck.
Mike
Mike
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#8
hi pressure coolant
Sounds like the exact problem I had,but I have a 3rd gen,more than likely it is your cooling seals,but make sure your fan is working,thermostat's good,are you getting heat,do a pressure test,its not your cap trust me.
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