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07-27-2016, 10:48 PM
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#1 |
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Registered User
Join Date: Nov 2009
Location: DFW,TX
Posts: 233
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Can't figure out why my truck is running hot
Can't figure out what's wrong, I replaced, The water pump, thermostat, radiator, fan clutch and gets hot in about 10 minutes from a cold start, oil is not milky but just wondering if it's possible I have a blown head gasket
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07-27-2016, 11:06 PM
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#2 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: Can't figure out why my truck is running hot
Are you sure it's full of coolant? Did you fill the engine through the top radiator hose? If you just put coolant in the radiator, it will not go into the engine and therefore not get to the back side of the thermostat so it won't open.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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07-27-2016, 11:18 PM
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#3 | |
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Senior Member
 
Join Date: Mar 2011
Location: West Plains, Missouri
Posts: 7,559
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Re: Can't figure out why my truck is running hot
Quote:
__________________
my build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=459839 Jimbo's long bed step build:http://67-72chevytrucks.com/vboard/s...t=464626<br /> |
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07-27-2016, 11:55 PM
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#4 |
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Registered User
Join Date: Nov 2009
Location: DFW,TX
Posts: 233
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Re: Can't figure out why my truck is running hot
Yes it full I'm filling it up thru the water tank that the Silverado are equipped with, once it starts getting hot it spits water thru that tank and the small overflow hose that's there
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07-28-2016, 01:31 PM
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#5 | |
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Registered User
Join Date: Sep 2013
Location: fairbanks, ak
Posts: 339
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Re: Can't figure out why my truck is running hot
Quote:
Absolutely need to remove the upper radiator hose and fill the motor from there. It even helps to pop the steam vent line off to purge the air out of system. |
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07-29-2016, 07:56 AM
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#6 | |
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Registered User
Join Date: Apr 2010
Location: Guntersville Alabama
Posts: 1,073
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Re: Can't figure out why my truck is running hot
Quote:
Last edited by homemade87; 07-29-2016 at 08:02 AM. |
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07-30-2016, 11:30 PM
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#7 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Can't figure out why my truck is running hot
Taking the steam port loose on the intake passenger side was the only way I got mine to work. Losen it up and when you see liquid coming out tighten it up and finish filling.
I also had the front end on a lift as high as it would go. 
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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07-28-2016, 12:06 AM
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#8 |
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Senior Member
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,497
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Re: Can't figure out why my truck is running hot
Have you confirmed the temp? A bad radiator cap will allow it to spit out.
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Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs. |
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07-28-2016, 11:42 AM
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#9 |
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Registered User
Join Date: Apr 2009
Location: Murray,KY
Posts: 39
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Re: Can't figure out why my truck is running hot
Is it possible the drive belt is routed incorrectly?
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08-04-2016, 10:14 PM
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#10 |
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Registered User
Join Date: Jan 2011
Location: Mullin, Texas
Posts: 16
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Re: Can't figure out why my truck is running hot
It helps if you raise the front of the vehicle up until the radiator is the highest point in the system. Fill through the upper hose until you think it is full, wait 2 hours and fill it again, repeat as necessary to remove the "air Lock" you currently have.
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