John & Patricia Donnelly wrote:
>...having the coolant tested for exhaust gases (also known as a block test).
>We
>believe that the head gasket may have burnt through, especially since I have
>87
>mm pistons and there have been similar type problems with these gaskets in the
>past with the bigger liners. A compression test, nor a cooling system pressure
>test wouldn't find this type of problem.
>
FWIW -- I once tested for and found this problem (on a Fiat) by
stretching a balloon over the radiator neck and pumping air into each
cylinder one at a time (using the spark plug hole fitting from my
compression tester) until I found one cylinder that inflated the
balloon. If you don't have a big enough balloon you can probably find
something suitable in most gas station restrooms.
The 'sniff test' should be conclusive but the balloon method had a
certain "Mr Wizard" quality to it.
Geo Hahn
59 TR3A
64 TR4
Mt Lemmon, AZ
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