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My 2007 Kia spectra got hot due to a leak in bypass hose, I replaced hose and thermostat and now I'm getting a lot of pressure in upper hose,how do I know forsure it can be a cracked head?

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Suspect that you have put the thermostat in wrong
the body of the thermostat is in the block or head
I suspect that the thermostat was at the bottom hose into the block and that would account for the pressure in the top hose as the thermostat is not opening allowing the coolant to circulate
you can check for a cracked head/ blown head gasket with a compression test

Posted on Dec 20, 2016


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Posted on Jan 02, 2017


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How to change lower coolant hose on a 2005 KIA SPECTRA

Drain the radiator, replace the clamps & hose.refill the cooling system . top it off when running w the heat on. U might as well replace the upper hose, clamps, thermostat & gasket too just as a full cooling system maint. procedure. YES your gonna get dirty.

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How to put a themostat in a kia spectra 2002

Kia_Sephia_Rio_Spectra_Optima_1998-2006 - Repair Guide
2002 Kia Spectra 1.8L MFI DOHC 4cyl

Removal & Installation - 1.5L, 1.6L, 1.8L & 2.0L Engines

  1. Drain the coolant to a level below the thermostat.
  2. Remove the water inlet fitting, gasket and thermostat.
  3. Clean the gasket mating surfaces.

Fig. Exploded view of the thermostat-1.5L engine shown, 1.8L similar


Fig. Exploded view of the thermostat-1.6L engine


Fig. Water inlet fitting (A) and thermostat-2.0L engine

To install:
  1. Place the thermostat in the housing with the jiggle valve facing upward. Install a new thermostat gasket.
    Fig. Use a new gasket (A) when installing the thermostat (B)-2.0L engine shown
  2. Install the water inlet fitting and tighten to 14-19 ft. lbs. (19-26 Nm) for 1.5L, 1.6L and 1.8L engines, or to 11-15 ft. lbs. (15-20 Nm) for 2.0L engines.
  3. Fill the engine with coolant, then start the engine and check for leaks.

I hope helps with this (remember rated this help) Good luck.

Jan 05, 2010 | 2002 Kia Spectra

1 Answer

My 06 kia spectra 5 themp gauge is showing hot but there no engine light coming on the water doesn't seem to be boiling

check to to see if the thermostat is not flowing by feeling the upper radiator hose and comparing it to the temp of the lower hose after the car has been running,if there is a noticeable difference between the two hoses then replace the thermostat, be sure that you don't put your hands in there with the engine running and make sure that the key is off also the electric fan will run wit out warning if the key is on.Also check the oil to see if any coolant has gotten in to it if it has it will look either milky white or a greenish color with a slight sweet smell.This will be a sign of a failed head gasket.One other thing look at the water pump to see if it might be leaking even slightly that will mean the water pump is failing or has failed,if all of this checks out then it could be just the temp sending unit.hope this helps.

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Engine overheating? Check:
1. Coolant level at cold
2. Coolant leak check for loss of, during "not hot" running condition. (water pump, hoses)
If above is ok, I would replace the thermostat. It's inexpensive and easy enough to do.

Hope this helps... Good luck!

Jul 04, 2009 | 2003 Kia Spectra

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The thermostat would be the place to start if you are sure its not the heater core. Heater core would have tell tale signs like antifreeze mist blowing in the vents or wet carpet soaked with anti freeze on the car floor, usually tword the passenger side. If its not the core, or the thermostat when you change it, then its probably in the hvac controls, but the core and the thermostat should be checked first. Also let the car warm up and feel both of the small hoses running into the firewall to the heater to see if they are hot. If not, one might be plugged. Hope this helps, Clay

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