FORD EXPLORER ROUGH SHAKING VIBRATING IDLE DIAGNOSIS & FIX

In today's video we take a look at my 2008 Ford Explorer w/ a 4.0 SOHC V6 engine. I've been noticing recently that the engine vibrates and shakes during idle. I don't believe it's a misfire. It seems more like a vacuum leak, however we don't have any trouble codes or DTC stored. Follow along and I'll show you how we can diagnose this problem by looking at fuel trim numbers using a very cheap affordable diy scan tool and a smoke machine.
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*****************Tools used in this video!*******************
KINGBOLEN YA200 OBD2 Scanner

MR CARTOOL T130 Automotive Smoke Machine
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Disclaimer:
Due to factors beyond the control of Advanced Level Auto, I cannot guarantee against improper use or unauthorized modifications of this information. Advanced Level Auto assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Advanced Level Auto recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Advanced Level Auto, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Advanced Level Auto.