if its not sucking air at a loose connection i would fill carb w/gas and run or another trick ive done is use an air hose from my compressor and while some else is cranking engine blow air into tank at gas filler with air hose sealed with a rag creating pressure to send gas to fuel pump. wes
Might want to blow the line out with some air. No kinks or anything in the line? You should be able to get the gas down the line just by jacking up the rear end... if it doesn't go, you have a problem in or with the line. If nothing there you might want to check the suction on the intake part of the pump... pump might be shot and not pulling the gas down.
Love me a Stang
68 coupe with a 351W and fmx
Mods: a lot... just ask if you're interested
99 Gixxer 750 (When four wheels are too many)
You didn't say if it was running or not before the tank swap, but on my Stang the Line was clogged with goo at the tank end. It sat for ten years and the gas eventually thickened up. The sock on the end of the pickup/sender had to be replaced too.
When you replaced the tank, you prolly woulda noticed those type of issues.
As already suggested, you could try blowing out the line with a compressor. Disconnect the line at the pump and the tank and hit it with the air. Put a bucket under the other end and see what comes out.
As always, be careful when working on the fuel system. The vapors are whats dangerous, so make sure your work area is well ventilated.
I'm doing my tank this weekend and plan on doing the draining/removal outside.
I thought about recommending air pressure to the tank- but I remembered a thread here about a tank imploding (due to a non vented cap- while running the car IIRC) It was crazy- it collapsed like a beer can- therefore- I really would be carefull adding pressure via air compressor. (I realize you're only talking about using a rag to seal it but still- you might wanna search out that thread- It tells me some of the repro gas tanks are scary cheap. Anyhow- blow out the fuel line, if its clear- revisit the sending unit filter (the "sock" on the end) My vert's sock was clear BUT if you removed the sock- the line was very clogged- But if you just blew the line out you never noticed this as this is in the tank. IF you are game for it- you could try vaccuum on the carb side of the line (either a vaccuum pump, or the mouth method (trying not to drink any). Do this w/o the cap installed, in case your vent is stopped up. Also any pinholes in the rubber lines?
Ha- I didn't think of that- but yeah- and 1/2 gal ain't gonna do it- One thing- before you dump 5 gals in it- Be sure that little rubber oring looks seated (at the sending unit) Or you'll really have fun (lets just say I know this one from experience) It is very scary laying in several gallons of gas with a light source trying to fix the o-ring
Quite simple to check your fuel line. Every time I change my fuel filter, mounted on my fuel pump, the fuel line drains, about a quart. Try doing this. If you dont have that
"can" type filter, disconnect your fuel line at the pump and see if it flows.
If it doesnt, your fuel line is clogged. The SAFEST way to clear it is to blow compressed air from front to back. DISCONNECT the line from the sending unit, you dont want whatever was in the line in your tank. Put some scrap rubber tubing on the tank end and put this end in a gas can or some other receptacle so it doesnt go all
over the place. Then run a can of Sea Foam or carb cleaner through your fuel system. Good luck.
You may find this funny, but disconnect the inlet line at the pump and have somebody watch for fuel. Remove the fuel cap and pretend you are kissing the filler neck and gently pressurize the tank with lung power. Unless the sock on the pickup is plugged or you have a kink somewhere it shouldn't take long for fuel to flow (unless you're a heavy smoker that's out of shape).
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