This is topic why doesnt my coolant frm overflow suck back into radiator in forum Tech Talk at Northern California Ford Owners  .


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Posted by clone nprogrss (Member # 10342) on :
 
so when my t-stat opens up an pushes the hot water out to the overflow tank y doesnt it get sucked back into the radiator??
 
Posted by sydewayzLX50 (Member # 10217) on :
 
it should when the motor cools off
 
Posted by clone nprogrss (Member # 10342) on :
 
quote:
Originally posted by sydewayzLX50:
it should when the motor cools off
stan wtf!! naw im playin! then how czn i explain whats goin on with my temp goin up!! air pockets in motor??
 
Posted by turbo50 (Member # 6700) on :
 
Man did you check for CCW rotation on your water pump? 86-93 5.0 right?

http://www.californiafords.com/ubb/ultimatebb.php?ubb=get_topic;f=6;t=025129
 
Posted by sydewayzLX50 (Member # 10217) on :
 
your overflow is working right, your car is just overheating. i personally think its your fan or water pump. im leaning more towards the fan though.
 
Posted by sydewayzLX50 (Member # 10217) on :
 
his water pump is being spun ccw, i cant say for sure if its a reverse rotation pump though
 
Posted by turbo50 (Member # 6700) on :
 
still has a headgasket or cracked head issue im about to bet money on it assuming all the rest of the coolant system is new.

Dan
 
Posted by sydewayzLX50 (Member # 10217) on :
 
even if its running like a champ and theres no mixing of water and oil?
 
Posted by turbo50 (Member # 6700) on :
 
quote:
Originally posted by sydewayzLX50:
even if its running like a champ and theres no mixing of water and oil?
Ya.

Did he have the coolant check for exhaust in it?
 
Posted by SLOWSN95 (Member # 8269) on :
 
I was about to say what Dan just said. Sounds like you got a bad head gasket and you have exhaust getting into your cooling system. With the car cold.. how long does it take for your upper radiator hose to get firm? If it gets firm almost instantly.. good chance thats your problem..
 
Posted by sydewayzLX50 (Member # 10217) on :
 
the upper radiator hose doesnt get hard right away. it only really gets hard when its overheating. i dont know how to check exhaust in the coolant, but when i take the radiator cap off i dont hear any combustion or exhaust noises. how do you check that?
 
Posted by clone nprogrss (Member # 10342) on :
 
i dnt have any oil mixin with water and the car runs fine it just does it in traffic sumtimes and by the way on the freeway its fine! dan if u can explain how it can b a blown headgasket!
 
Posted by RacerX (Member # 11046) on :
 
Lol
 
Posted by clone nprogrss (Member # 10342) on :
 
quote:
Originally posted by RacerX:
Lol
lol at what?? when it happens to yo car lol at that! [Roll Eyes]
 
Posted by coupe5oh (Member # 10411) on :
 
quote:
Originally posted by sydewayzLX50:
but when i take the radiator cap off i dont hear any combustion or exhaust noises. how do you check that?
this made me lol..but if you can start the car with the radiatorcap off and coolant doesnt go gushing out then you most likely dont have exhaust gasses getting into your cooling system via a blown head gasket..but the only way you can know forsure is to use this tool...

http://www.google.com/products/catalog?hl=en&sugexp=tshc&cp=12&gs_id=b&xhr=t&q=combustion+leak+tester&qscrl=1&nord=1&rlz=1T4ADBS_enUS291US292&gs_upl=&bav=on.2,or.r_gc.r_pw.&ion=1&b iw=1280&bih=565&wrapid=tljp1314722523075014&um=1&ie=UTF-8&tbm=shop&cid=5273924839465899478&sa=X&ei=8BJdTqDLG8O1sQLW9pwQ&sqi=2&ved=0CEkQ8gIwAA#

[ August 30, 2011, 12:44 PM: Message edited by: coupe5oh ]
 
Posted by CobraCoupe (Member # 7233) on :
 
go to a smog shop or a shop that has a smog analyzer and ask them if you could have them sniff the cooling system(overflow bottle, or radiator) with the caps off and watch for how much HC/CO content is in the coolant that will tell you if exhaust is getting in the cooling system....
 
Posted by turbo50 (Member # 6700) on :
 
quote:
Originally posted by CobraCoupe:
go to a smog shop or a shop that has a smog analyzer and ask them if you could have them sniff the cooling system(overflow bottle, or radiator) with the caps off and watch for how much HC/CO content is in the coolant that will tell you if exhaust is getting in the cooling system....
This is exactly what you need to do.
 
Posted by clone nprogrss (Member # 10342) on :
 
quote:
Originally posted by turbo50:
quote:
Originally posted by CobraCoupe:
go to a smog shop or a shop that has a smog analyzer and ask them if you could have them sniff the cooling system(overflow bottle, or radiator) with the caps off and watch for how much HC/CO content is in the coolant that will tell you if exhaust is getting in the cooling system....
This is exactly what you need to do.
will do!
 
Posted by clone nprogrss (Member # 10342) on :
 
forgot to mention i burped the radiator yesterday an drove it around for a while yesterday got on it,let it idle for like 15-20 mins and it didnt overheat! drove it around today a bit hard an it didnt overheat again!
 




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