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How to drain the fuel tank?

Tiny
PETEYB
  • MEMBER
  • 2000 CHEVROLET S-10
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
Truck sat for 2 years and wanted to replace gas. Runs rough.
Sunday, March 6th, 2022 AT 7:51 AM

3 Replies

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

On this truck the best option is to remove the fuel filler pipe and use a siphon pump to remove the fuel.

Here is a helpful video on fuel siphoning:

https://youtu.be/Q5MH2gnyFH0

I have attached the procedure below.

Please let me know if you have any questions.
Thank you.
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Sunday, March 6th, 2022 AT 8:30 PM
Tiny
PETEYB
  • MEMBER
  • 2 POSTS
Can I also use the fuel pump relay and the fuel rail method, other people have mentioned this. I tried this but could not get the fuel pump to engage. I have a 4 pole relay with numbers 85, 86, 87 and 30. Which ones would I use if this is possible? Thanks much for your previous help!
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Monday, March 7th, 2022 AT 12:01 PM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
One thing you can try is to provide 12V directly to the pump. This will allow the pump to run and get all the fuel out, thru an open line.
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Monday, March 7th, 2022 AT 8:33 PM

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