Re: water foam in engine when driving at 40mph

Posted by Marith McCoul on January 07, 1997 at 11:15:18

In Reply to: water foam in engine when driving at 40mph
posted by Robert Howson on January 03, 1997 at 12:56:16

Are we describing real FOAM here? Like soap-suds kind of?
We've seen this before. Assuming that your headgasket and
cylinder head and block and radiator are clean and good and
that this is really FOAM and the car is truely not overheating,
you are the victim of improperly neutralized hot-tank solution.
When blocks are rebuilt, they are hot-tanked. This caustic
solution, if not properly flushed, when mixed with anti-freeze
expecially (but water does it too) foams just like a dish-
washer when you put "regular" dish washing detergent in it.
The only solution we've found is to run gallons and gallons
of hot water through the block to flush the stuff out.
Model A Fords at Ford-N-More

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