Finished swapping an Aspire B3 into a carby Festiva.... No gas, no start???

[nitrofarm]

The mechanical pump has two valves inside. If one of these is in the closed position it will block flow. To test this theory,just get a straight barbed fitting that fits your fuel line. Put this tube in place of the fuel pump & try running it.PS you need to get an enertia switch wired in series for that fuel pump. Dont ever run a E pump without one.

[Ray]

Minor detail:

A while back, I ran the car out of gas. This is the first time it has happened in it's 403,900 miles. Every since then, the car has had a little bit of hesitation to it when you put the petal down to the floor. I have never changed the fuel filter, nor do I have any idea where it's at. (havent tried looking for it)

Would this be enough to prevent the new electric fuel pump from pushing gas to the engine? I never had any difficulty starting or anything other than the slight hesitation with the mechanical fuel pump, and I can't imagine the old fuel pump being Hercules compared to the new one.

[Ray]

Alright, here's the senerio.

I bought a B3 from a fuel injected Aspire. After a couple of days of work with a few friends, we got everything running, everything bolted up, etc etc. (We kept the carburator and did NOT swap to efi)

I knew going into this that the mechanical fuel pump on the Festiva engine would not work with the Aspire engine. As we were swapping accessories over, we looked just below the valve cover on the rear, and in the exact same spot as the carby Festiva engine, there was a blank. We removed the blank and the hole looked almost identical to the hole where the fuel pump goes on the Festiva engine. It bolted right up - I was ecstatic.

And yes, I am absolutely sure this is an Aspire engine. The belts along with the cams are the way they are supposed to be for an Aspire.

Anyway! We got everything hooked up, and tried to start it. No dice. We poured a little gas into the carb and the car purred like a kitten. It was quiet, and sounded exactly the way it should.

So my conclusion is this - the mechanical fuel pump bolts in, but the head is different, and does not provide the mechanical power the old fuel pump needs. But I was prepared for this! I bought an electric fuel pump off of ebay the produces 3-5 psi. I fitted it onto the fuel line as close to the fuel tank as I could get.

You can hear the the new electric fuel pump turn on and start pumping, but gas is still not getting to the carb for some reason. Keep in mind that I left the mechanical fuel pump in place, because I did not want to deal with the headache of figuring out how to re-route the fuel lines under the hood to get rid of the mechanical fuel pump. Would keeping the old fuel pump in place keep gas from moving to the carburator properly? If so, does anyone have any idea how to loop around the fuel lines to delete the mechanical fuel pump?

All of this being said, any advice???