352 not pumping fuel

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truck-collector
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352 not pumping fuel

Post by truck-collector »

I have a 67 352 with 5000 miles on a rebuild. This engine was pulled from my 67 about 4 years ago to make room for a 460 (the engine was rebuilt about 10 years ago). I just put the 352 into a '66 and for some reason its not pumping fuel. I tried two different fuel pumps and bipassed the fuel line, but nothing. I know that there is a cam centric that operates the fuel pump-but do those go bad? I really do not want to put an electric fuel pump on this. Is there a way to check the cam centric thing without taking the timing cover off?
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Re: 352 not pumping fuel

Post by fordman »

you can take the fuel pump off and see if it moves with your finger or soemthing that will reach it. i have the same problem with my 390. i think the fuel pump is bad. it wont suck hard enough to let the fuel actually pump . it sucks but then it also blows back through the pump side when the arm relieves. i hate these fuel pumps because of this. i bet that is your problem to. i have several of these pumps and they are all doing the same thing when tested off of the engine. they suck and blow from the intake side of the pump.
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convincor
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Re: 352 not pumping fuel

Post by convincor »

when putting the fuel pump in you should be able to see if there's a load on the pump or not.
Even with the ecentric at the lowest point there should still be a slight preload on the pump.
There be about a 1/16"-1/8" gap at the bottom of the pump were the flanges meet. Rotate the crank a bit and that space should get bigger if the eccentric is still in place. Also, the cam pin should keep the eccentric from loosening.
I'd say it's the pump also.
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Re: 352 not pumping fuel

Post by FORDification »

You can just remove the fuel pump and take a look inside the slot to see if the eccentric is still there and intact. Here's a couple pics for the visual:

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In this shot, I'm holding the fuel pump right where it would be if the timing cover was removed:

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