'94IDITurbo7.3
HAMMER DOWN!
there are two ways that a head gasket can leak, internal or external, internal would mean you would need to do a block test. block test finds hydrocarbons in the coolant. here is a block tester from napa.
http://napaonline.com/Catalog/CatalogItemDetail.aspx?R=BK_7001006_0361073538
external would mean you would need to get engine to operating temp and then pressure test it, OR, you add dye to the coolant and then run the engine for a while and look for the dye. here is the type of dye im refering to from napa.
http://napaonline.com/Catalog/CatalogItemDetail.aspx?R=NTE784702_0282517235
either way, good luck.
thanks for the links. based on my pics and the fact that i have ZERO evidence of coolant in the exhaust i think i would have the external gasket failure.
that does make sense.In order for pressurizing the radiator to show, I'd bet you'd need the thermostat to be open. Maybe not though, I'd definitely try it.