Bad fuel pump? on 48 DeSoto

[MarcDeSoto]

I noticed that the fuel pump bowl had finally filled with gas after many weeks of cranking.  So I unhooked the gas line from the carb. to see if gas was being pushed up to the carb.  Nothing came out when I cranked the engine.  So I put a vacuum gauge on the fuel pump and I got a 0.2 or almost a 2.  I don't know what measurement I'm supposed to use.  I assume the 2.  The manual says I need the pump to produce 3.5 to 5 pounds.  So it looks like my fuel pump is weak.  Correct?  

[rrunnertexas]

Sounds like a bad pump or a leak in the fuel line prior to the pump which is sucking in air, instead of fuel.

[MarcDeSoto]

I did the sucking test where you disconnect the incoming fuel line and put your finger on the fuel pump intake hole.  The manual says you shoud feel sucking, but I didn't.  So I think I'm going to buy a new one.  

[Sam Buchanan]

Fuel pump operation was one of the first things we suggested should be checked way back when......

 

I'm trying to be diplomatic....  ?

[MarcDeSoto]

And Keith showed a pic of ketchup squeeze bottle and said to forget the fuel delivery for now.  I guess I can hook up a gravity feed system until the new pump arrives just to get it started.  

[Bingster]

If you do rebuild the pump, Then & Now has a good assortment of rebuild kits. I rebuilt my 588 for my DeSoto and with the bowl I got from you I have one complete fuel pump. Of course, I haven't tried it yet! I ran out of good weather.

[kencombs]

Take the pump apart and see what's wrong.  Could be one of the check valves stuck due to sitting so long.  If the diaphragm isn't cracked it may be repairable with no parts.  

[DJ194950]

Ken,

 

Ya sure you want him to open up and diagnose internals of a fuel pump?

 

Jus askin".

 

DJ

[MarcDeSoto]

I wrote the vendor and he said to send it in and they will evaluate it.