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OVERHEAT!

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Old 10-29-2009, 08:51 PM
  #31  
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Originally Posted by 05TurboS2k,Oct 29 2009, 09:17 PM
OK.....

Time to just start reaching for straws.

#1. Let's pressurize the cylinders and see if we fail the leak down test via air escaping into the coolant system.

#2 Let's pressurize the coolant system and see if we get water in a cylinder or anywhere else for that matter if test #1 fails.
I agree. Remove the radiator cap and start with cylinder leak down test and make sure you leave the pressure in each cylinder for more than 10 mins and nothing come up the radiator. I have a feeling that you have a slightly blown headgasket.
Old 10-30-2009, 12:46 PM
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ok i ll try it. will report here after the weekend
Old 10-30-2009, 12:47 PM
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The leakdown test equipment hooked up to an air compressor will allow you to pump air into the cylinder with enough volume via the compressor tank to see the bubbles in the system.

Just in case u weren't aware.

-Greg
Old 10-30-2009, 01:20 PM
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Originally Posted by 05TurboS2k,Oct 30 2009, 01:47 PM


The leakdown test equipment hooked up to an air compressor will allow you to pump air into the cylinder with enough volume via the compressor tank to see the bubbles in the system.

Just in case u weren't aware.

-Greg
yeah im aware. thanks though
Old 10-30-2009, 11:24 PM
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Assuming you have bleed the cooling system, remove the radiator cap with the engine on. If you consistantly see air bubbles, this means that compression is making its way through the cooling system and out of the overflow. Pressure provided by the cylinders is greater then your radiator cap and thus the following.


Old 10-30-2009, 11:47 PM
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I know you said its a new mugen thermo, but maybe its a defective unit ? Try swapping with another thermostat.
Old 10-31-2009, 03:46 AM
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^ Seems unlikely but crossed my mind too. Can't hurt/
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