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hi guys this might be simple - but

i am trying to drain the fuel tank so i can fill with e85 for tune -

i have pumped the fuel in to a jerry can but it only half filled - i aint %100 on how much is in there but it is now only dribbling into the tank so i by passed the 2 big pumps just using the intank pump and it is puffing air and very fin amount of fuel-

Q. is it now empty? ( fuel gauge is not working and i have not checked through the cap inside the car)

this is what through me off i put all line back on with surge tank blah blah and car started first go and idles fine turn it off and can hear fuel dribbling into the surge tank..

i am %99 percent sure i am gonna have to take the cap off and put my hand in the tank and see any fuel.

thoughts

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Disconnect the feed line and just keep priming the pump maybe? Not sure if this would work just and idea.

That would work, but amazingly slow. If you had a 400lph pump, that would pump 100mL a second......and still not fully drain the tank of all fuel like ops initial post.

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https://www.sau.com.au/forums/topic/424523-draining-fuel/#findComment-6838377
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