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Coolant in heads any suggestions?

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Old Dec 4, 2011 | 03:20 PM
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camarochrisz28's Avatar
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From: lansing mi
Car: 91Z28
Transmission: 700R4
Axle/Gears: 3.23
Coolant in heads any suggestions?

Hey guys i have a 350sbc tpi recently rebuilt,car has not even left the parking lot,i had been experiencing white smoke coming out of the tail pipes thought it may go away after a while however i did not,i knew this meant i had a coolant leak problem somewhere,sure enough i popped my valve covers off today to take a look and there was coolant in the heads the pvc valve also seemed coated in coolant if that gives anything away ?............=[ .Now i ran a pressure test on the car and i did not see any coolant leaking from anywhere visible i have a feeling that i may have a intake gasket leak.

What do you guys think?
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Old Dec 4, 2011 | 03:26 PM
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Re: Coolant in heads any suggestions?

You HAVE a leak.
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Old Dec 4, 2011 | 03:40 PM
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305sbc's Avatar
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From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: Coolant in heads any suggestions?

Sounds like a good chance you are right about the gasket leak.
While the intake is off look very closely for cracks in the block in the lifter-valley area. If the coolant freezes it's a common area for the water-jacket to crack.

More importantly, coolant in your oil will destroy your bearings.
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Old Dec 4, 2011 | 03:55 PM
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camarochrisz28's Avatar
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From: lansing mi
Car: 91Z28
Transmission: 700R4
Axle/Gears: 3.23
Re: Coolant in heads any suggestions?

yeah i plan on checking my oil tomorrow and seeing what i get....... last time i checked the oil it seemed normal as usual no milk or anything like that.Is it normal to have a intake leak that could leak down to both heads?
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Old Dec 4, 2011 | 05:01 PM
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From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: Coolant in heads any suggestions?

Originally Posted by camarochrisz28
yeah i plan on checking my oil tomorrow and seeing what i get....... last time i checked the oil it seemed normal as usual no milk or anything like that.Is it normal to have a intake leak that could leak down to both heads?
It only takes one leak. The lifter action in the valley sloshes the coolant everywhere.
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Old Dec 5, 2011 | 12:48 PM
  #6  
camarochrisz28's Avatar
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From: lansing mi
Car: 91Z28
Transmission: 700R4
Axle/Gears: 3.23
Re: Coolant in heads any suggestions?

Drained the oil today seems to have a small green tint to it,i think it will be ok being that i caught it so fast and there are like no miles on the engine.I am going to pop off the intake in a few days hopefully that shows something wrong!
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Old Dec 5, 2011 | 02:40 PM
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From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: Coolant in heads any suggestions?

coolant + oil = milkshake.... it looks like mud.
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Old Dec 5, 2011 | 02:53 PM
  #8  
camarochrisz28's Avatar
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From: lansing mi
Car: 91Z28
Transmission: 700R4
Axle/Gears: 3.23
Re: Coolant in heads any suggestions?

yeah thats what i have going on,i guess i will just have to start the tear down and see if i can hopefully find my problem!
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