Changing out Fuel Pump (reassembly question)

[EddieJames]

I have a new fuel pump, filter and pre-pump filter coming in. While I'm changing them out I am going to blow out all of the gas lines (replace as necessary), the return, and the tank.

What is the best procedure for getting gas back through while putting everything back together?

Do I just hook it all up and turn the start key, or do I need to rotate the air flow sensor and let the pump and lines get full, or should I manually fill it all from above where the tank is in the trunk? How do you guys and gals go about reassembly on this?

Thanks!

[majicwrench]

SInce I hate messing with fuel I would just put it all together and start it. It will purge the air out of the lines in seconds.
Blowing out the lines.....do you have a good reason for doing this??? Blowing gas all over my shop is also something I avoid.
Keith

[So Cal Mark]

you could pressurize the tank since you have a blow gun, but as Keith wrote, the pump will fill the system quickly

[EddieJames]

Ok - thanks guys - It's got a bunch of bad gas in it - Been sitting for about 2 years. That's why I was going to blow everything out and refill with fresh 93.

[spider2081]

I have purchased a couple cars that sat for years. The longest was about 15 years. I remove the fuel sender flom the tank and inspect the tank. If there is a lot of fuel I remove the hose from the FI pump and let the fuel drain into a pail. This leaves a few gallons in the tank that I sphion out. Then I inspect the tank for dirt and rust.
I install an inline fuel filter before the pump. Some people recommend a Fram 6399 but I have not been able to fine that one. I use a Fram FF3419 or a wix 33270. This helps keep any rust or dirt out of the new pump.
I put about 5 gallons of gas in the tank. Then remove the hose from the cold start valve and connect the hose from the fuel rial to a longer hose that I buy at Home Depot. Put the hose in a pail to collect the fuel. I make the fuel pump run by opening the flapper in the AFS. Watch the fuel and you can see it change color and become clean after about a quart passes. When you feel you have a clean system reconnect the cold start valve. You can remove the inline filter if you feel the tank is clean enough not to damage the new pump. Some people prefer to keep a filter in line before the pump.