draining bad gas

[Low87c10]

I have an 87 C10 with fuel injection and about 5 gallons of bad gas in the tank. I tried siphoning it out the filler neck, but was unable to get the hose into the gas. (Tried several different hoses of varying diameters.) I really REALLY don't want to have to take off the bed and/or drop the tank unless it is absolutely necessary. Here are my questions:
1) If I disconnect the fuel line at the filter that is on the frame rail and turn the key on, will the fuel pump generate enough pressure to drain the tank? (I figure I can connect a hose to the line and run it to an empty gas can.)
2) If I do this, anyone care to give input...am I going to blow myself up in the process?


Any input or other ideas would be very much appreciated. Did I mention I really don't want to take the bed off?

[Captkaos]

I would go with option 1, but I would pull the line off the back of the filter instead  Your problem would be keeping the pump running as it only primes unless the engine is running.  Vile may know an easy way to bypass it to make it pump.

[eventhorizon66]

LOL.  Why not disconnect the filler hose where it meets the tank and drop your siphon hose there?  I've done this several times.

[VileZambonie]

All you have to do is hook a jumper wire up to the pigtail hanging off of the fuel pump relay. This goes directly to the b+ side of the pump so hook it to battery b+ and the pump will energize. That will allow you to operate them pump. Just keep an eye on it. When it stops pumping shut it off otherwise you will burn up the pump and have to drop the tank anyway.

[Russ130]

I did what Vile says but remember as soon as you start hearing air getting sucked up you have to shut off the pump. Keep in mind these pumps not only pump the fuel but also use it for cooling the motor and lubrication.

[Captkaos]

Thanks Vile, I forgot about the jumper on the firewall...

[Low87c10]

where can I find the pigtail and fuel relay you are talking about?

[VileZambonie]

Cavity C of the fuel pump relay is the jumper lead.

[Captkaos]

it is right by the AC unit on the firewall at the top (as pictured)

[Low87c10]

AC...that's funny...this truck doesn't even have power steering...lol

Thanx all who helped.

[Low87c10]

Just to be sure I have this right...jumper from bat + to the c terminal will run the fuel pump...right?

[VileZambonie]

yep

[Low87c10]

thanx again