Visit The Dirt Forum for More Information

Author Topic:   loosing coolant
harome1xc
Member
posted December 06, 2003 01:28 PM
After my car warms up and then I shut it down, it will spew out total maybe a 1/3 of a gallon out of the over flow tube-some while its running and more after its shut down. Right after I shut it down or even while its still running, if I take the cap off- I feel like i shouldnt be doing this- I can look in and see that its like 5-6 inches low in the radiator, and this is just after filling and running it a while-maybe 10 min. past 180* on the temp gauge.


Okie11m
Member
posted December 06, 2003 02:17 PM
Might be the cap.


midmod34
Member
posted December 06, 2003 05:15 PM
check the rad make sure that you havent expanded the rad core to block off the fins or may be the head gaskets


racer17j
Member
posted December 06, 2003 05:57 PM
i'd check the rad cap and your temp gaige any motor will get hotter when you shut it down if you don't cool it off one way to make it safe to open the cap right away is to put a dump valve on the thermostat housing then you can release the pressure and let it cool faster then you can put cool water back in and bring the temp down all you have to do is get a housing with the temp sensor in it remoce the sencor and pur a 90* elbow fitting and a 3/4 water valve on it then just run some heater hose or fuel line down tot hre ground and you can dump the pressure


JRB13
Member
posted December 07, 2003 05:56 PM
Midmod, what do you mean expanded the radiator core and block off the fins? Its a new radiator, is that something that I dont have to worry about then? The other thing is, while it is warming up, it will build temp to say 190 then i guess the thermo is opening cause it will suddenly drop way down to like 140 and do that again a few times. But this may be totally normal.


racer17j
Member
posted December 07, 2003 11:48 PM
get rid of that thermostat gut it out and just use the housing as a restrictor and what he was meaning is when you get it to hot sometimes the tubes will exspand and that makes it so the air doesn't pass thru good enough to cool properly. another thing to look at make sure your filler cap is the highest point of your cooling ststem or you can get air pockets in there and that will cause a heating problem but it sounds to me like a bad cap are you running a 22# racing cap or stock?


harome1xc
Member
posted December 08, 2003 01:39 PM
Running a stock 16# cap with a red spring loaded tab thing on the top-pretty much a stock cap. I dont really think its building pressure, when I get a new cap, should I look for a 22 lb'er?


racer17j
Member
posted December 08, 2003 04:16 PM
yes stant makes a good racing cap thats your problem. with the higher pressure cap it brings the boiling point up i think it's 5 deg for every 2 # of pressure or something like that


dan ferry
Member
posted December 09, 2003 07:08 PM
easy way to ckeck cap if u have over flow bottle squeese top hose and if its pushing coolant or air in then caps shot.if you cant see in bottle just pull hose off at rad and squeese top hose. i reccomend going with race cap ive went thru caps from auto parts quick


harome1xc
Member
posted December 16, 2003 01:02 PM
I finally figured out where the darn coolant is going. There is a small hole in one of the tubes going across the radiator (called rods i think?). It was on the front so it kind of looked like it was dripping from the cap. Anyone ever like cut the tube, pinch it off and do a little soldering to save the radiator? It a 4 core and less than a year old. I havent taken it out yet but Im really hoping that might work.


racer17j
Member
posted December 16, 2003 08:40 PM
we have done it before for a quick fix at the track but a rad shop will only charge you a few bucks to fix it right. did you get a new cap yet?


harome1xc
Member
posted December 17, 2003 10:40 AM
Yea, got a new cap, same thing. So thats when I looked closer. The hole is on the lower front of the radiator on the cap side. I saw the dripping and assumed it had just come from the cap overflow hose or cap seal. So that is a pretty common fix? They just crimp it off or something. Im gonna give a few shops a call, thanks for the help all.


GO 24
Member
posted December 17, 2003 11:15 AM
Don't laugh guys but I've repaired numerous small holes by pinching them off, cleaning/drying the area and using JB Weld! I've never had one leak afterwards.


Back to the Archives