Leak down test - possible BHG

free_couch
Fri, 01 Apr 2011 04:54:19 +0000
Maintenance/Repairs

I just did a leak down test on my 86.5 Toyota Supra turbo, I was looking to find the basic health of the engine. I don’t have an actual leak down tester so I ran compressed air set at 90psi straight into each cylinder set at tdc. For every cylinder, the coolant in my radiator started rising and spilling over, no bubbles were present. Does this mean I have a blown head gasket or something worse? I was told by the previous owner that the engine has a metal hg with arp studs that were torqued to 80 ft-lbs.

Thanks

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