How to test a radiator cap AND not get false results!
Channel: How 2 Wrench
Date: 2016-06-28

Here I show how to test a radiator cap without false results. A diagnostic tech has the tools and knowledge to prove their work, not just assume and replace. Falsely “diagnosing” a failed cap as the reason an engine is overheating will NOT fix the source problem and your customer will be back. Consider that each part of the system has its own function. 
Amazon Link for Stant Tester: https://www.amazon.com/Stant-12270-Cooling-System-Pressure/dp/B0002SRGWU?SubscriptionId=AKIAJBFM5PIYLB7SLPOA&tag=h0f7f-20&linkCode=alb&camp=2025&creative=165953&creativeASIN=B0002SRGWU
Stant 12021 Small Cap Tester Adaptor: https://www.amazon.com/Stant-12021-Radiator-Cap-Adapter/dp/B00180JQUQ?SubscriptionId=AKIAJBFM5PIYLB7SLPOA&tag=h0f7f-20&linkCode=alb&camp=2025&creative=165953&creativeASIN=B00180JQUQ
Stant 12027 Small Radiator Tester Adaptor: https://www.amazon.com/Stant-12027-Radiator-Cooling-Adapter/dp/B000P6WMM8?SubscriptionId=AKIAJBFM5PIYLB7SLPOA&tag=h0f7f-20&linkCode=alb&camp=2025&creative=165953&creativeASIN=B000P6WMM8
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