Car will not start after accidentally put diesel fuel in a gas vehicle

2006 GMC YUKON
250,000 MILES • 5.3L • V8 • 4WD
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JACK WOOD
  • MEMBER
  • 1 POST
I put diesel fuel in a gas engine by mistake. I've done every protocol known to remedy. Cleaning the tank cleaning the fuel system cleaning the plugs new wires. I have fuel pressure. Now starting fluid but won't even make it sputter. It has run ruggedly before I replace the wires. Now it's like I have absolutely no spark when all the plugs are clean and the wires are new.
Feb 12, 2020 at 9:21 AM
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ASEMASTER6371
  • ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good afternoon,

Did you replace the injectors? I would at least have them cleaned. I attached a procedure for the cleaning.

Can you check for spark at one of the plugs while cranking?

https://www.2carpros.com/articles/how-to-test-an-ignition-system

What is the fuel pressure?

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Roy

Feb 12, 2020 at 1:27 PM
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