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I Am Completely Stumped Coolant Loss

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  #1  
Old 04-05-2010, 08:57 PM
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Default I Am Completely Stumped Coolant Loss

well im loosing coolant at a pretty good rate. its hard to say how much but lets say a half gallon every 300 miles as a guess. i am definetely not burning any coolant. its not in my oil. i didnt blow a headgasket... i have studs and o-rings and i only hit 40 lbs. of boost with the stock charger and yes i torqued the studs down right and all that stuff. its not my heater core... i have no antifreeze in my cab. and no coolant is on the ground. so where is this going? tho only thing i havent checked is my water pump and i do have a leak from the front of my truck but it looks like oil and my timing case is cracked so i always thought it was oil but i jb welded it and i guess what i think is oil is coolant mixing with greasy crap and looks like oil. kinda a long stretch. i pressure tested it and i loose about 5 p.s.i. every ten minutes or so. i also have not replaced my rad cap. im pullin my truck in the shop tomorrow and me and my boss are gonna look the whole engine down good so i wanted to know what to look for. sorry for the worlds longest post ever.
 
  #2  
Old 04-05-2010, 09:27 PM
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wow a half gallon every 300 miles. If you sure its not a head gasket or in your oil, check all your hoses first then the freeze plug in the back of the block.
 
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Old 04-05-2010, 09:45 PM
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I went through the same thing last year...couldn't figure out where it was all going but kept an eye on my levels and kept rolling. Finally, the water pump went out so there was the explanation. Killed 2 birds with one stone and added a brand new belt. Fun times.
Good luck!
 
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Old 04-05-2010, 09:47 PM
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i just checked and that freeze plug is still fully intact. as well as all the rest of them. wouldn't the plug be completely gone or have major crack if anything happened to it?

---AutoMerged DoublePost---

ok im just gonna replace my water pump and hope for the best. thats the only thing i can think is wrong.
 

Last edited by jrad989; 04-05-2010 at 09:47 PM. Reason: Automerged Doublepost
  #5  
Old 04-05-2010, 09:56 PM
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if your dropping that much, there is deffinately a leak somewhere. it might be when the motor is warm when u the leaks the most, or maybe the fan is blowing the water. so it aint showing where the leak is. good luck man
 
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Old 04-05-2010, 09:58 PM
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i am pretty sure it looses most when its warm almost like its burnin it off or somethin.
 
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Old 04-06-2010, 07:19 AM
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heater core maybe leaking under you carpet?
 
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Old 04-06-2010, 07:29 AM
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like BrokenG said.........prolly the water pump, there is a weep hole to let you know but the fan blows so hrd it distorts everything, if you not going to tow you can pull the fan and watch from there, clean the area well then sprinkle some flour so the glucol will make some tracks.....................or just replace the damn pump they are cheap
 
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Old 04-06-2010, 11:13 AM
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my cab is rhino lined and there is definetely no water anywhere. im just gonna replace the water pump and see what happens.
 
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Old 04-06-2010, 11:35 AM
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Is the front of the block wet? Cause when my water pump went out it was running outa the weep hole like a stream! Scared me at first I thought I blew it up! Bit that is a ton of fluid to be losing and not seeing drips on the ground when u park it...
 


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