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Old 09-10-2015, 11:46 AM   #1
67 Chevy LWB
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90 corvette

I have a 90 corvette with a L98 motor I got a few weeks ago. I was checking the coolant the other day. I had the rad cap off while it was running checking making sure it was full and everything working. While it was running the coolant started to boil out. I checked the temp gauge and it showed it wasn't running hot. I wondering what would cause it to do that?
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Old 09-11-2015, 03:16 PM   #2
Clyde65
1965 Chevy C10, 2005 4.8L/4l60
 
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Re: 90 corvette

air possibly escaping from the motor. could also be just the flow of coolant coming from the motor. was it warm when you looked at it ( I mean the engine had been running for a little while)
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Old 09-11-2015, 03:57 PM   #3
67 Chevy LWB
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Re: 90 corvette

Yes coolant was hot. I talked to a guy at a Chevy dealership today. The guy said it maybe a closed thermostat.
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