okay so i got done replacing the head gaskets, thermostat, valve cover gaskets, intake manifold gaskets, etc. Basically everything that is done when replacing the head gaskets. So i go to fire it up, and nada. It will crank, and i already checked for spark, and that's a go. pulled the fuel filter line going to the carb and no fuel in it.
now there are two wires, red/blue and brown(maybe brown/red). they are in the same loom as my coil and am not really sure if these are part of the fuel pump circuit if it has an electrical fuel pump or what. or does it have a vacuum operated fuel pump and im missing a vacuum line and/or have a line plugged in wrong.
Help is appreciated.

 

The fuel pump is mounted on the engine. So no wires.

How long have you tried cranking it? It can take a while sometimes for the pump to siphon the fuel forward and start pumping towards the carb.

Check all rubber line... from pump to line on frame.... midway on the framerail is a rubber line and then the rubber connecting the tank to the fuel line.

Also, when doing engine or carb work you should ALWAYS pre-fill the carb with fuel to reduce uneeded cranking. With fuel in the carb bowls the engine can start and run and the fuel pump has time to usually catch up with demand.

Josh

 

thanks. i actually just found pictures that i took prior to disassembly. hopefully i'll be able to track down those hoses and everything to make sure they go in the right location.

 

Do you have a aftermarket, PO installed, inline fuel filter between the tank and pump? If so replace it, first. If not try this:

Fuel pump should be on right side of eng, (facing grill) in front of oil filter. With 2 lines, one coming from tank/frame area to it, and one going from pump to the carb.

If it is there with those 2 lines attached, its cam driven not electeic. Disconnect the line going to the carb (at the pump), with someone else turning over eng, look for fuel coming out of the pump.

Be careful do not get squirted in the eye, and do not be smoking.

If no fuel, disconnect (from the pump) the line coming from tank, attache a line to it (fuel pump, inlet side) and put other end in a 5 gal fuel can, turn over again, if it starts, sound like your lines from tank are clogged.

If it doesn't, sounds like its time to change your fuel pump. Easy job, 2 bolts, 2 lines.
If that doesn't fix it, your cam lobes could be worn, time to go to a elec pump.

At least that how it turned out for me, I replaced the factory fuel pump with a new one and still would not start/no fuel being drawn from the tank by the pump.

The elec pump was easy to install, I wired the power to the pump thru the key, so I didn't have to always flip a switch.

Hope this helps, let us know.

 

thanks, sir! im gonna do this when i get home from work at 9. i'll let ya know what i find out tomorrow!

 

Looks like to me just from your last picture there is no fuel line running to the carb.

 

there is. i see what you are saying, but it's there i promise. theres a fuel filter just before it. it's dark out and of course the lines are black. hard to see.

 

Ok, I see now. I also see you have at least 2 fuel filters there. One on the carb and one inline before that. IMHO keep the one on the carb and ditch the other one. Run new fuel line between your carb and the metal line. I have had trouble with fuel starvation before and come to find out the rubber line was coming apart on the inside and blocking flow.

 

eh, thanks for the advice guys. turned out i just had a couple lines mixed up. got her all done up last night and drove her to my apt. my buddy sure is glad its out of his driveway. she started overheating again as i rolled up, but i didn't even bother with it last night. unfortunately i might be selling her... but am in no hurry, so i'm not gonna take a loss on her. if nothing else i'll keep at her and maybe get her right one day.

 

So where did that 2 wire plug go to?

 

well it wasnt a two wire plug... it was two single wire bullet style female plugs, and i have no idea currently.

 

It looked like there were 2 wires going to it.

 

I am having similar fuel problems with my 79 Ford Bronco. I have recently replaced the cam and had the heads rebuilt. I can get the engine to start, but once it uses the fuel in the filter then it dies. Not sure what else to check. New fuel tank, fuel pump, carb, filter. If this does not fix it what specs are needed for a electric fuel pump?

 

Try to find out if you are getting air into the tank, if the tank isn't allowing air to enter then it is very difficult for the fuel pump to pull the fuel out of the tank. Make sure your cap isn't creating a totally airtight seal. Just another thought good luck.