Fuel Pump Help

I think I'm going crazy. I'm replacing my :v6: fuel pump for reliability reasons - the old one is aging a little and I'd hate to be in the boonies when it decides to quit.
So - I take out the old one put in the new one - along the way replace some of the old fuel line, put in a new inline filter, hook it all back up and... nothing. I can crank all day and get nothing. Its like it isn't pumping. I filled the gas tank and still nothing. The new filter is clear so I can see that no fuel is going through. So that leaves me with 2 options that I can think of.

1) I have to somehow prime the fuel pump. I havent read or heard anything about this process so I would need some advice in these regaurds.

2) The new fuel pump is installed wrong. I believe that I repaced it the same way it came out. The little arm sets on a little cam in there. I didn't know that there was a wrong way to do this.

Side note- I am also finishing up a HEI conversion. I figured as long as I was on that side of the engine - may as well take care of both of them. I have put the timing light it as it cranks and I am getting spark (slowly).

If someone can help PLEASE that would be much appreciated.

Thanks

 

Hmmm.. Ok I'll run check that.

 

Dissapointment. The arms are exactly the same. Same length, same bends. There was even a little oil mark where it his the cam - the same spot where it's worn a little on the old one. Hmmm..

 

have you tried putting the old one back in? maybe the new one is bad......just a thought.

 

Have had this happen a few times always with the :hurrican: wonder why?

 

OK.. I just went and double checked all my work. It seems ok. Question though - which port is the intake and which is the out? on the new one there are 3 ports

1) Threaded one facing somewhat toward the exhaust manifold. I believe that is the input.

2) Large (1/4") nipple facing down. I believe this is the Output to the carb.

3) Small nipple facing down. I believe this is a return to the tank which I have none so I sealed a machine screw in to plug it up.

If this is not correct - let me know.

 

sounds a little backward...............

 

the 1/4 inch should be the inlet and the other the outlet.

 

once you figure out what is the inlet and what is the outlet, put the pump in a vise. run a hose to the inlet. put the other end of the hose in a can with some fuel in it. start pumping the arm up and down. if fuel sprays out the outlet, then your pump is good and the problem is elsewhere. nows a good time to replace the fuel filter too...

 

Problem solved. I had in/out mixed up . On my old pump there were different fittings facing different directions. I just re connected the hoses in approx. the same positions. The new pump has the fittings in different positions. I guess there was a change in pump layout around 68-69 and I had both pumps... short story long - Its all fixed now. I just have to dial in my new HEI then I'll be ready to go.

Thanks all for your help.

 

Good for you.........Isn't this the greatest place. So much knoweledge and good people.

 

Glad you got it sorted out, yep, this is a great place for all of us.