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Fill with E85 and Bench Test

17:16
25:59
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At 17:16 in

Ready For More Power! Boosted 5.3L Yukon XL DW400 Fuel Pump Install (Uncle Rob Ready To Turn Up!)

What happens here

After all connections are made and the fuel tank is secured, pour E85 fuel into the new tank. Ensure all lines are purged of air, and then start the vehicle. Listen for the fuel pump priming and check for any fuel leaks around the new fittings and connections. If no leaks are present, the fuel system is successfully installed and ready for further performance tuning and dyno testing. The presenter explicitly uses Ignite Red racing ethanol (E90/114 octane) for initial testing, emphasizing its higher quality compared to pump E85.

Goal: Confirm the new fuel system operates correctly without leaks.

Tools and materials

  • Vehicle with new fuel system GMC — The completed vehicle ready for testing
  • E85 Fuel — Fueling the new system for initial operation

What they say

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are you feeling it mr krabs yeah ashton had the foresight to make the lines long enough that we can you know you can drop it low to service it and undo them which is nice but as long as you unplug this it can drop down low pretty good oh we got some e85 in here just gonna shove it in i've never filled a gas tank directly into the gas tank underneath the car with race ethanol this is ignite red like ignite racing ethanol um it's it's e 98 uh it's 90 yeah that's what it is it's 114 octane so it's pure and better it's it's just it's way better than pump ethanol which is we're going to do the test on pump ethanol but we just got to put a few gallons in here to make it start and uh we don't have a 700 gallon box of pump ethanol sitting 10 feet from here we have a giant box of ignite so that's what we're going to use for now i race on ignite i run it in the escalade and stuff but we will be using pump ethylmanol because that's what you guys are going to use all right monkeytime do you want me to climb are you are you good at climbing better at climbing than you are yeah you weigh less started yep start it just for fun i want to be able to check for leaks though yeah it might not be happy because it's on ignite now but try it again it'll stay running eventually it was but then it got put back to 93. aaron so it might be we i think we're good yeah oh yeah boom it's fine yep it works don't fall you want some help yeah cute little john pump puppy yeah

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