fuel system problem
 

i'm not getting any fuel to the carbs. the tank had bad fuel and corrosion so i've pulled and cleaned it. pump runs, new fuel filter. i disconnected the line going into the carb and blew through. i had the line from the pump to some plastic piece disconnected. well i managed to blow gas out so the line is open but i had to blow pretty hard. i was wondering what the white plastic peice was, what it does, and if it could be what was restricting flow.

ok, everyone leave the top speed theory debate and help with the real problems. come on guys.............

what did you do to clean your gas tank?

right now rinsed it and its sitting. i'm going to look into a good hardcore cleaner to pour in. its leaning against the wheel drying right now. most of the corrosion was in the metal fuel hole.

so you actually droped it.. i am still looking for a way to flush it out without taking the damn thing out.. my seven is my only car, so it is hard if it has to much down time

my 7 had the rusty gas tank too, tried cleaning it, but still had to replace the fuel filter every 200 miles, rust just kept on growing i guess,,, i ended up buying one from a bone yard for 25 bucks and now all is fine, there is some sort of coating that u can line the tanks with, but it cost more than the bone yard tank,,,,,be nice if another model tank would fit our sevens, and get a newer tank off of it,,,are you talking about the white plastic piece at the fuel tank?, some sort of check valve and make sure you put it back on the way it came off, i didnt and i wasnt getting gas, just reversed it, there is also a small metal check valve in the fuel return line by the carb, clean it and put it back on the same way u took it off (one way valve too),,hang with it and youll get it running ,,,

this plastic piece is in line between the pump and carb. tank to filter to pump to white plastic piece (looks like brown metal until you pull a line off and realize its white plastic) to carb. i can't find the piece in the haynes manual. i'm wondering what it does and how easy i should be able to blow through the line. the tank doesn't seem as bad as i thought. mainly the entry tube. although i couldn't see in real well so i'm going to have to steal my friends maglight.

riffraff, dropping the tank isn't that hard. just choose the weekend and have someone to help you a bit. also run it out of gas. the guy told me he did and the damn thing was like 3/4 full. ouch. anyway, follow the haynes manual and you'll have it out in 15 minutes at the most.

dropping the tank is not hard,
it takes a couple of minutes to unbolt a couple of bolts,
have floor jack underneath and
voila

The little piece I think your refering to is a check valve of some kind? I got it on mine too, dunno what its for tho?

if it is then its not working correctly because i blew through from the hose at the carb and spray fuel out of it at the tail end of the car. i was wondering if it was maybe a fuel pressure regulator. i guess i could pull it and clean it. see if it says anything worthy. i believe the check valve is up by the carb. i'm going to dub this the mystery piece.

Plastic insert
 

If your car has not been monkeyed with, when you remove the "outline" from the fuel pump there should be a small plastic cone screen in the flexible line. It will probably look like the end of a brown stick, mine did. Pull it out carefully with a pair of needlenose pliers. Clean it throughly with brake/parts cleaner and fit it back in.

You should be able to shoot a rush of air through the line when you disconnect the fuel filter and the line to the carb. When you disconnect the lines to the carb you'll find each one has a small screen on the end of the line. Again, carefully take them off, clean throughly with brake/parts cleaner, and reinsert them.

Once you've done all this, you should be able to get fuel from the tank up through the line and up to your carb. With the line disconnected from the carb you should get fuel pumped up to you. Catch the fuel in a jar or can as you don't want it running down the engine to the plug wires or you'll have a bar-b-que!

Denny,
From the abandoned corncrib....:D

mines a 79. will i still have these screens? could this white plastic piece be me "screen" since its after the fuel pump and before the carb?

it is the fuel cut valve. i guess its for if you flip because it flows either way, aka not a check valve. now to find these screens.

On my 79 i couldn't find any of these screens either. That shouldn't surprise me tho, seeing as every other check valve was put in backwards.... anyway...anyone have a source for replacements? No boneyards in my neck of the woods...

i'm just putting another fuel filter before the carb to catch any shit from the lines.