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Old 08-02-2006, 09:22 PM
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Bad Head Gasket? ........Pitted Valves.


I have been plagued by an engine that runs cool but blows coolant under load. So I took off the drivers side head (I did the passengers side head last summer) and I didn't see a blown head gasket per say, but the coolant ports above each cylinder look like crap and are rusty down to the cylinder ring. (I have pictures if you would like to see further).

But, what I have noticed the most is 2 of my 4 cylinder chambers on the head are fairly pitted/erroded, like they have either suffered detonation or coolant. (Again, I have pictures).

Would coolant cause pitting in these 2 cylinders? Is this the tell tale sign I was looking for that the gasket is bad? The cylinders are not side by side and the pitting is mild to medium.

Thanks, Greg.

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Old 08-03-2006, 07:50 PM
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when you say the engine blows coolant under load where does the coolant go?
out the exhaust or out of the rad?or somewhere else?
if you get coolant out the exhaust you could have a cracked block,cracked head(combustion chamber or between valves)or blown head gasket.
possibly even a bad intake gasket seal between the water ports and intake ports(usualy shows as water in the oil though)
if its being pushed out the rad overflow then the most likely cause is an air pocket in the cooling system.( the fill point needs to be the highest point in cooling system and you might need to jack up that corner of the car when filling the rad to let all of the air get out)
just not exaclty sure where you are losing coolant from your description of the problem.
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