2007 Jeep Liberty Check Engine Light - P0300. Check for vacuum leak with smoke test.

My 2007 Jeep Liberty has a P0300 - Random/Multiple Cylinder(s) misfire detected. Also has an occasional rough idle. A vacuum leak is a common cause of both of these issues. This video will show using an automotive smoke tester to find a vacuum leak. AutoLine Smoke Tester https://www.amazon.com/dp/B0FR8N4R5G AutoLine Cone Adapters https://www.amazon.com/dp/B0BVGZPSV8 EGR Tube Gasket https://www.amazon.com/dp/B004981ZDU EGR Valve https://www.amazon.com/dp/B0DJ4VHF9J