fuel problems

[Lynn Eades]

Phil, I have read somewhere recently, that the Ford V8 range of carbs should be delivered a maximum of 2 1/2 psi. there are fuel pressure regulators available. Alfa Romeo use one called a "Fisba' or something like that. I have no personal experience with them. A point to be remembered is that the pump delivery pressure is dictated wholely and soley by the spring in the pump.

[Grant Bowker]

I have just searched Macs Auto Parts web site for "fuel pump push rod" - they list 4 lengths:
60 HP Aluminum intake 5-3/8"
60 HP Iron intake 6-3/8"
All other V8 Aluminum intake 7.87"
All other V8 Iron intake 8.87"
Since the 60HP are measured in fractional inches, I wonder if the others are a truncated measurement since 7/8"=.875".
This should give something to compare your pushrod to to see if it is worn.

[jim sewell]

To check for air leaks in pick up lines and taps , check the vacuum with the engine running at the inlet of the pump and check it again at the outlet from the tanks .
Readings should similar . To carry out the test run the engine off a gravity can.


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Is it sucking air at your change over tap (or anywhere else on the suction side of the pump.)(flexible hose etc) When you say the diaphragm is good, is it O.K. with modern fuel? Wet the valves in your pump and then put a vacuum gauge on it. It should suck about 15" to 18" of mercury. The delivery should be about 2-2 1/2 psi (which is controlled by the spring) If it does that, and holds it, then work back down your lines, as per my first

Regards
Jim S.

[Howard]

I had all sorts of trouble with my fuel pump, I put a full kit through it & it still would'nt suck up from the tank. The problem? The pump housing was cracked. Almost invisible... I replaced housing and away she went. I hope this helps rather than hinders...!

[Keith Webb]

Originally Posted by Howard

I had all sorts of trouble with my fuel pump, I put a full kit through it & still would suck up from the tank. The problem? The pump housing was cracked. Almost invisible... I replaced housing and away she went. I hope this helps rather than hinders...!

Yes, it wouldn't even run the 5 cylinders then available. I have some footage of Tony working on it.

[BSHEVLIN]

i finally worked out hat the seal was leaking air and is now fixed and running well. should have the carrier to a running / driving state again buy the end of the week

thank for the help - credit to you all -