Use ENGINE FUEL TRIMS to confirm vacuum leak
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Short Term and Long Term Fuel Trims Explained [Easily]
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Beginner Fuel Trim Diagnostics / Vacuum Leaks (Toyota Tundra)
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How to use Fuel Trim to identify the cause of a P0171 and P0174 code
11:11
Reading OBD2 Live Data
19:36
Master OBDeleven: Advanced Tips and Tricks Explained
29:46
Unlock the Secrets of the THINKDIAG 2: Full System Review
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Fuel trims explained (the easy way)
13:31