 Coolant overflowing issue. |
 May 30, 2013 - 12:22 AM
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 Enthusiast  Joined Aug 5, '09 From West Texas, USA Currently Offline Reputation: 20 (100%)  |
After longish drives my coolant overflows. Temp gauge sits exactly in the middle but as soon as I park after a drive it overflows. It could be my radiator but I'm not 100% sure. Thermostat was replaced only a few months ago, and my cap was replaced at the same time. Any other ideas as to what it could be?
-------------------- JDM Part King
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Replies
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May 30, 2013 - 12:26 AM
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 Enthusiast Joined Feb 15, '08 From Royal Oak, MI Currently Offline Reputation: 7 (100%) |
Internal leak, exhaust gases goes into the coolant line either through head gasket or cracked cylinder head.
-------------------- God made man....
Everything else... Made in China  |
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May 30, 2013 - 12:33 AM
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Enthusiast Joined Aug 5, '09 From West Texas, USA Currently Offline Reputation: 20 (100%) |
QUOTE (nics @ May 30, 2013 - 12:26 AM)  Internal leak, exhaust gases goes into the coolant line either through head gasket or cracked cylinder head. **** I hope its not that. I don't think its the head gasket because my oil isn't milky or anything. This post has been edited by 1994Celica: May 30, 2013 - 12:34 AM -------------------- JDM Part King
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May 30, 2013 - 1:00 AM
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Enthusiast Joined Feb 15, '08 From Royal Oak, MI Currently Offline Reputation: 7 (100%) |
QUOTE (1994Celica @ May 29, 2013 - 10:33 PM) QUOTE (nics @ May 30, 2013 - 12:26 AM) Internal leak, exhaust gases goes into the coolant line either through head gasket or cracked cylinder head. **** I hope its not that. I don't think its the head gasket because my oil isn't milky or anything. Same as mine before. No signs of water in oil or oil in the water. My cylinder head had cracks so the exhaust gases escape in the cooling system. -------------------- God made man....
Everything else... Made in China |
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May 30, 2013 - 1:43 AM
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 Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
Easy way to find out is to do a compression check.
This post has been edited by Box: May 30, 2013 - 1:43 AM -------------------- 2001 Miata LS 5-speed
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May 30, 2013 - 2:28 PM
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Enthusiast Joined Aug 5, '09 From West Texas, USA Currently Offline Reputation: 20 (100%) |
Took it in to my mechanic. Hopefully it wont be a cracked cylinder head, but I wont be surprised if it is.
-------------------- JDM Part King
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May 30, 2013 - 2:48 PM
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Enthusiast Joined Feb 15, '08 From Royal Oak, MI Currently Offline Reputation: 7 (100%) |
-------------------- God made man....
Everything else... Made in China |
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May 30, 2013 - 3:08 PM
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Enthusiast Joined Dec 8, '03 From Lancaster CA Currently Offline Reputation: 6 (100%) |
is it a 5S or 7A? i have a good rebuilt 7A-FE head that I rebuilt. it has all new valve seal gaskets, i cleaned and lapped all the valves. checked the clearances. its ready to be installed.
-------------------- 2001 Celica GT-S Turbo
1997 Supra TT 6speed 1997 Celica 3MZ/1MZ swap 1990 Celica All-Trac |
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May 30, 2013 - 3:17 PM
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Enthusiast Joined Aug 5, '09 From West Texas, USA Currently Offline Reputation: 20 (100%) |
QUOTE (Smaay @ May 30, 2013 - 4:08 PM) is it a 5S or 7A? i have a good rebuilt 7A-FE head that I rebuilt. it has all new valve seal gaskets, i cleaned and lapped all the valves. checked the clearances. its ready to be installed. Its a 5s. -------------------- JDM Part King
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May 30, 2013 - 4:19 PM
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Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
I just had a thought. When the thermostat was replaced, was the cooling system burped? I would say to try burping it now, but you already took it to the mechanic.
-------------------- 2001 Miata LS 5-speed
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May 30, 2013 - 4:33 PM
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Enthusiast Joined Aug 5, '09 From West Texas, USA Currently Offline Reputation: 20 (100%) |
Good news!! Apparently the radiator cap I bought was faulty and it just needed a new one. That's what I get for buying cheap parts.
-------------------- JDM Part King
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May 30, 2013 - 6:38 PM
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Enthusiast Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
HUZZAH!!!
-------------------- 2001 Miata LS 5-speed
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May 30, 2013 - 6:40 PM
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Enthusiast Joined Feb 15, '08 From Royal Oak, MI Currently Offline Reputation: 7 (100%) |
Glad it is a small fix!
-------------------- God made man....
Everything else... Made in China |
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Jun 23, 2013 - 7:48 PM
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 Enthusiast Joined Aug 2, '05 From Guam Currently Offline Reputation: 15 (100%) |
yup was just about to say, its usually a problem with the radiator cap or head gasket leaking. just did a radiator cap fix a few months ago because of overflow. those gaskets tend to thin out over time and get smushed and cannot sustain the right pressure.
This post has been edited by trdproven: Jun 23, 2013 - 7:48 PM -------------------- 94 Celica GT
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