Capable of identifying combustion leaks caused by bad head gaskets, cracked blocks, and warped heads, this vacuum-operated combustion leak detector provides a clear visual indication of engine faults. The detector draws vapors from the radiator through an indicating fluid that changes from blue to yellow when exposed to combustion gases. For operation, the tool connects to a vehicle vacuum line or a hand vacuum pump via the included red adapter.

Capable of identifying combustion leaks caused by bad head gaskets, cracked blocks, and warped heads, this vacuum-operated combustion leak detector provides a clear visual indication of engine faults. The detector draws vapors from the radiator through an indicating fluid that changes from blue to yellow when exposed to combustion gases. For operation, the tool connects to a vehicle vacuum line or a hand vacuum pump via the included red adapter.