Boil Over Help
Thread Starter
Instructor
Joined: Jan 2002
Posts: 150
Likes: 0
Boil Over Help
Boil over problem. I replaced my thermostat last night with a 180%. I took it out for a ride and smelled what was like hot radiator water. It got up to just below 150% While comming home toninght everything was as the night before. I parked the car and came back about 10 min later and saw were it had boiled over. I also flushed and refilled the radiator with antifreeze. It also looks as if the water pump is working fine :confused:
Safety Car
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Re: Boil Over Help (TRUE-DUALS)
I agree. Check your radiator cap. Many times the spring gets fatigued. I run a 19-22lb cap on mine. If your radiator and heater core can take it I'd step up to a slightly higher lb cap.
You should also be aware that when you shut your motor off the temperature will continue to rise. Just because it says 180 when you shut it off doesn't mean that it will remain 180 degrees and go no higher. In fact the temperature could climb up to 200-210 degrees after you shut it off. Is it boiling over on you whenever you are driving it or just when you shut it down?
You should also be aware that when you shut your motor off the temperature will continue to rise. Just because it says 180 when you shut it off doesn't mean that it will remain 180 degrees and go no higher. In fact the temperature could climb up to 200-210 degrees after you shut it off. Is it boiling over on you whenever you are driving it or just when you shut it down?
Instructor
Joined: Jun 2003
Posts: 231
Likes: 0
From: Frisco TX
Re: Boil Over Help (TRUE-DUALS)
Mine has the same issue, except my boilover exits the system through a leak in the top of the radiator. She won't leak coolant while she's running, but after I shut her off (maybe 30sec. to a minute later) she starts leaking coolant and hissing like she's overheating. Your cooling system builds up more pressure after you shut off the engine - the water pump is no longer circulating water through the radiator to be cooled, but the heat from the block needs to go somewhere. Check for a leak in your system (hole in the radiator/hoses/heater core, bad cap, or any combination). After running the car long enough to heat up, shut it off with the hood open and look for the leak. It should be obvious.
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Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
Re: Boil Over Help (TRUE-DUALS)
Bence as I said before I can smell the radeator while driving but its not boiling over till I shut if off. Can a cap go just like that
