Would you guys ever diagnose a fuel pump with the fuel pump off?

@masterautotraining

54.2K followers · usually 2.7K views a post

Views

116.2K

Likes

6.3K

Comments

134

Shares

119

SoundTikTok sound · F.N.F. (Let's Go)

Promoted product

Master Automotive Traininghttps://linktr.ee/masterautomotive ↗

Why it worked

The video uses a high-stakes, visual demonstration to debunk a common industry misconception, establishing the creator's authority and promoting their training services through expertise.

Summary

A mechanic demonstrates why load testing is superior to simple resistance testing for diagnosing electrical circuits. He uses a single wire strand to show that resistance tests can pass even when a circuit cannot carry the necessary current.

Structure

1Pose a rhetorical question about diagnostic methods
2Explain the flaw in only checking resistance
3Demonstrate the test using a wire and multimeter
4Apply power to show the wire failing under load
5Summarize the lesson and provide a final tip

Product placement

The creator is wearing a branded shirt for 'Master Automotive Training' and uses the brand name in the caption and hashtags.

On-screen text

STOP doing static test!!

Original caption

STOP doing static test!! 🛑 #stop #MakeNightsEpic #masterautomotive #masterautomotivetraining #CatchChobaniOatmilk #909 #foryoupage #fyp

More from @masterautotraining

More breakout videos from this creator.

Transcript

Would you guys ever diagnose a fuel pump with the fuel pump off? Then why would you diagnose an electrical system only checking resistance? Let me show you why it's important to load test the circuit to make sure the circuits work. So doing a resistance test on this 14 gauge wire, you can see we have zero ohms of resistance. Now I'm going to test one strand and we're still going to see very low resistance. Testing this one strand of wire, we can still see that we have very little resistance. So we have 13 volts of pressure. So as I apply ground to the circuit, you guys can see that current begins to flow. Pay attention to our wire and look at how our wire is actually glowing. The reason why you guys want to make sure you load test is resistance said this wire was okay, but look at how much current this wire is actually carrying just because there's only one strand of it actually present. So always make sure you guys are using a load tester of some sort to load the circuit, not just check resistance. Remember, why are you going to check a fuel pump when the fuel pump is off? It's obviously going to pass. I'll see you guys on the next one.