What's the best way to Siphon gas from a GMC sonoma??
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Not Mad
Joined: Feb 2004
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What's the best way to Siphon gas from a GMC sonoma??
What's the best way to drain or Siphon the gas out of a 94 GMC sonoma??? I don't see a drain plug to remove all the fluid from the tank? I've tried from the filter area, but I think I'm doing it wrong. I removed the line from the back side of the filter facing towards the gas tank, I put the car in the on position to turn the fuel pump on , pumped the gas pedal to create some sort of Siphon and it didn't work. Only what was still in the line would come out. I even tried holding down the gas pedal and still nothing. Any suggestions?
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now with ls1!
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first off, on a efi vehicle, pushing the "gas" pedal goes nothing but operate the throttle blade. ecu controls fuel delivery via injector pulses while it's running.
to answer your question though, you are on the right track with taking the line off and turning the key on. but it will only cycle the pump for a few seconds. what you can do, is locate your fuel pump relay and jumper it across the power and output contacts to continuously run the pump. if you have any questions about jumpering the relay, don't guess at it. look up a schematic on the relay pin configuration and do it accordingly. you don't want to be replacing an ecu or harness trying to get gas out of it
to answer your question though, you are on the right track with taking the line off and turning the key on. but it will only cycle the pump for a few seconds. what you can do, is locate your fuel pump relay and jumper it across the power and output contacts to continuously run the pump. if you have any questions about jumpering the relay, don't guess at it. look up a schematic on the relay pin configuration and do it accordingly. you don't want to be replacing an ecu or harness trying to get gas out of it
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Thread Starter
Not Mad
Joined: Feb 2004
Posts: 10,411
Likes: 0
first off, on a efi vehicle, pushing the "gas" pedal goes nothing but operate the throttle blade. ecu controls fuel delivery via injector pulses while it's running.
to answer your question though, you are on the right track with taking the line off and turning the key on. but it will only cycle the pump for a few seconds. what you can do, is locate your fuel pump relay and jumper it across the power and output contacts to continuously run the pump. if you have any questions about jumpering the relay, don't guess at it. look up a schematic on the relay pin configuration and do it accordingly. you don't want to be replacing an ecu or harness trying to get gas out of it
to answer your question though, you are on the right track with taking the line off and turning the key on. but it will only cycle the pump for a few seconds. what you can do, is locate your fuel pump relay and jumper it across the power and output contacts to continuously run the pump. if you have any questions about jumpering the relay, don't guess at it. look up a schematic on the relay pin configuration and do it accordingly. you don't want to be replacing an ecu or harness trying to get gas out of it
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