318 Fuel pump will not prime
#957351
03/23/11 10:53 PM
03/23/11 10:53 PM
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Joined: Jun 2005
Posts: 13 Moundsville, West Virginia
mbjeeper
OP
member
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OP
member
Joined: Jun 2005
Posts: 13
Moundsville, West Virginia
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I have a '69 Fury II, 318, all stock, 52K miles. If the car sits for a day or so, it will not start due to lack of fuel. I know that the carb does leak off fuel. The visible fuel filter above the pump shows that no fuel is being pumped while on the starter. I have checked the in tank sock, replaced all of the rubber lines, replaced the fuel pump,(twice) and checked for proper venting. If I prime the carb (dump gas) it will start and the fuel pump will then keep it running. There is never a problem after it is running--no starvation on long hills, so I don't suspect the eccentric. I realize that if the carb is dry, it will take some cranking to get the bowl full enough to start, but this thing never pumps a drop on the starter. As a result, this car almost never gets driven, and it's a shame. I have thought of putting an elecric pump on a switch between the tank and the mechanical pump to prime the mechanical pump just for startups. Would the mech pump pull through an electric pump when the electric pump is off? Any help appreciated. Greg
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Re: 318 Fuel pump will not prime
[Re: mbjeeper]
#957355
03/23/11 11:33 PM
03/23/11 11:33 PM
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Joined: Jan 2003
Posts: 18,427 UPPER MICHIGAN, MARQUETTE COUN...
NITROUSN
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 18,427
UPPER MICHIGAN, MARQUETTE COUN...
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Quote:
I considered that a possibility, as well. I have put the car on the lift and looked very closely for any wet spots that might indicate a leak, but couldn't find anything. The steel line on the car is still the original, and therefore suspect, but I couldn't see any leakage. Thanks
Test the line. Disconnect from tank and pump. Blow out the line. Plug one end and with a hand vacuum pump see if it will pump up and hold. Putting an electric is just a bandaid if there is a leak. In time the leak may get worse and the electric may not prime either.
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Re: 318 Fuel pump will not prime
[Re: Paul_Fancsali]
#957357
03/24/11 05:43 PM
03/24/11 05:43 PM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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with this very problem I have fixed it both times by replaceing the rusted line pull it off and slap it on the cement one time to knock the rust loose i counted over 37 pin holes and stoped counting I have found a few ecentrics worn with a hole cut thru on the rub area and only moved the pump arm slighty lots of older carbs tend to leak gas at the core plugs/jet wells in them,they need rebuilt and epoxy to seal them up good the newer gas does not sit very long before bad and is even harder on the rubber seats/hoses in the system if you have changed everything else,then I would lay my $ on the pin holes in the main line after replaceing the line on mine,all the fuel delivery problems I had went away and would then keep the filter 1/2 full at all times and a couple days at a time good luck
Last edited by scratchnfotraction; 03/24/11 05:46 PM.
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Re: 318 Fuel pump will not prime
[Re: hooziewhatsit]
#957359
03/24/11 06:43 PM
03/24/11 06:43 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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set a small can of gas in the eng compartment & hook it to the pump inlet w a piece of 5/16" neoprene fuel line & see if that elim the prob
live every 24 hour block of time like it's your last day on earth
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