Re: Fuel Issue / 58 Packard
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Home away from home
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It sounds like you have a dent or rust in the steel line, or else a very slight air leak, either a pinhole in the line or a tiny leak at any connection anywhere on the suction side of the system. It's possible for a leak to allow air in and yet not leak fuel to leak out. Any air leak on the suction side will cause problems.ALSO: Be sure your gas cap vent is not plugged or obstructed.
Posted on: 2023/11/20 14:55
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Re: Fuel Issue / 58 Packard
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Home away from home
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Pretty easy to change fuel line on 57 58 Packards as from tank to joint near front of chassis near brake pedal bracket where frame kicks or bends up . short piece from that point to where fuel pump line connects. If you put your electric fuel pump near front of rear springs easy to replace line which is not expensive or hard job and will make sure you have no small . With new fuel lines and pump you should have no fuel problems as all will be new. If car is supercharged fuel line is 3/8 from tank to factory mechanical pump pump. From pump to carb is 5/16. pic is my electric pump mounting location
Posted on: 2023/11/20 15:45
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Re: Fuel Issue / 58 Packard
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Quite a regular
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That's basically wear I put mine . Won't pump fuel from tank to fuel pump .
Posted on: 2023/11/20 16:37
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Re: Fuel Issue / 58 Packard
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Home away from home
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Then the only thing it could be is a blockage in your fuel line or, more likely, in the flex hose at the pump. The flex hoses, just as happens on flexible brake lines, can collapse internally while still looking fine on the outside.
It could also be in the tank's pickup inside the tank where there may be a screen or just lots of debris blocking it. I've never needed an electric pump, preferring to fix the actual problem rather than throwing electric pumps at it.
Posted on: 2023/11/20 19:26
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Re: Fuel Issue / 58 Packard
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I believe that some of these pumps will run in either direction depending on whether the red wire is grounded or hot.
For a positive ground Packard, the red wire would need to be grounded, and the black wire would be hot. I'd check the wiring polarity, and then test the entire installation by putting a length of fuel line hose on the carburetor line and placing the other end of it in a suitable container, and then turning on the pump. Fuel should flow from the hose almost instantly and it should be a good stream. (Do this outdoors and use caution to avoid fire/explosion. Best to have 2 persons, but one can do it if caution is used.)
Posted on: 2023/11/20 19:29
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Re: Fuel Issue / 58 Packard
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Thank you did that very thing . Using a Edelbrock Red Fuel Pump. Can hear the pump running the directional area is in the correct flow for fuel.
I was able to get it to pump fuel today and drive about 10 miles, ran good and fuel in filter . I bypassed the small hose coming out of the fuel tank that went to the steel line and ran ran rubber fuel line up to the fuel pump . So I'm thinking the small fuel line is collapsing or the steel line that goes to fuel pump has a leak. Rubber hose straight from fuel tank to pump work and pumps fuel!
Posted on: 2023/11/20 19:53
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Re: Fuel Issue / 58 Packard
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Home away from home
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Reading carefully, I can about guarantee you that there is a small pinhole in your steel line. That often happens where the line passes over the axle, usually under one of the retaining clips.
Given the age of these cars I automatically replace the entire fuel line when waking one up. The time in the garage is much shorter than the time along the side of the road.
Posted on: 2023/11/20 19:53
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Re: Fuel Issue / 58 Packard
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I dropped and cleaned the tank the pick up tube was clear , and free of any debris .
Posted on: 2023/11/20 20:44
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Re: Fuel Issue / 58 Packard
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Home away from home
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Yes, I hear you that the tube is clear. But if there is the tiniest pinhole in the tube the pump will suck air rather than lift the fuel out of the tank.
Posted on: 2023/11/20 22:11
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