New Head Gaskets - Coolant Leak? - Team Camaro Tech
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post #1 of 5 (permalink) Old Nov 27th, 05, 11:30 AM Thread Starter
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New Head Gaskets - Coolant Leak?

I just started my engine after valve guide repair. I was watching the gages and for external leaks. The temp gage climed up to about 3/4. I shut the engine off and the radiator spewed. I know that I need to purge the air out, but is that normal. I had the cap off to watch the level of coolant. It is only about 50 degrees in the garage. Is this too early to see a coolant leak?

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post #2 of 5 (permalink) Old Nov 27th, 05, 11:45 AM
 
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Re: New Head Gaskets - Coolant Leak?

It'll spew if you're running a thermostat and it didn't open yet. I would use a cooling system pressure tester to be sure. If you don't have one, to check for leaks, the system will have to be pressured up using the heat from the engine, with the cap closed.
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post #3 of 5 (permalink) Old Nov 27th, 05, 12:33 PM
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Re: New Head Gaskets - Coolant Leak?

What temp. is 3/4 on the gauge?

It is not unusual to have a "dry" engine, heat up during the first start. Did you fill the block with water before starting? What type of thermostat? Is it drilled?

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post #4 of 5 (permalink) Old Nov 27th, 05, 12:47 PM Thread Starter
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Re: New Head Gaskets - Coolant Leak?

Sorry for pushing the panic button guys. I was really freaked out with all I have been thru for last few months (vacuum leaks, plugged rebuilt restored carburetor, leaky guides, changing intake gaskets). I really did not want to pull the heads for fear of having them not seal again. I know, if they sealed the first time they will again. I let the engine temp equalize while it was shut off for a half hour and everything seems to be OK! The valve guide problem is solved. No smoking at idle or at all. It sat idling at 900-950 rpm for 10 minutes, then drove, checked timing etc.. All, I need is my newly rebuilt/tuned 4053 carb back and I am good to go. I am sure glad we have full sun and 55 degrees today. Hallelujah!!!!!!!!!!

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post #5 of 5 (permalink) Old Nov 27th, 05, 01:39 PM
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Re: New Head Gaskets - Coolant Leak?

Drill a 1/8" hole in the flange of the thermostat. That will allow the air to escape and rule out air being trapped in the cooling system.

Dave
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