John Deere Zero Turn riding mower Briggs and Stratton smoking. How to figure out why it is smoking with a quick fix and cylinder leak down test. This one is a thinker!!
Small Engine Leak Down Tester in Video: https://amzn.to/39lj4pF
Spark Tester Video:    • Amazon Spark Plug Tester Comparison, ...  
Coil Cleaning:    • Briggs No Spark - Spark Test & Free F...  

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