At 1/2 tank I run out of gas.
Moderator: TechMOGogy
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
At 1/2 tank I run out of gas.
Has happened twice in last month. When I get to 1/2 tank indicated the truck stalls out. Otherwise the truck is running fine. If I add gas to the fuel tank at this point it still will not start until I prime the fuel line on the gas tank side of the fuel filter with a separate gas can and hose.
Is there a submerged fuel pump in the gas tank in addition to the mechanical pump on the engine?
Thanks,
Sam ('71 710K)
P.S. The gas gauge is working fine i.e. 1/2 indicated is 1/2 actual.
Is there a submerged fuel pump in the gas tank in addition to the mechanical pump on the engine?
Thanks,
Sam ('71 710K)
P.S. The gas gauge is working fine i.e. 1/2 indicated is 1/2 actual.
Sam
'71 710K
'71 710K
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
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- Posts: 1704
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- Location: San Bernardino Ca
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Look for cracked supply hose or loose hose fit on suction side. Also you can pull the fuel sender out and look directly at the pick up for debris.
I used a different gas can the other day and now I have a oil cap or additive cap gasket in my tank , it has gotten sucked to the pickup twice now Guess I'll have to get it out before the next road trip on Sunday.
I used a different gas can the other day and now I have a oil cap or additive cap gasket in my tank , it has gotten sucked to the pickup twice now Guess I'll have to get it out before the next road trip on Sunday.
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
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- Posts: 1704
- Joined: Wed Apr 14, 2004 3:42 pm
- Location: San Bernardino Ca
- Contact:
Fuel line is rubber until it attaches to the feed pipe at the tank.
Pull the seats and engine cover to check all the lines. Also check any hoses and connections to gas fired(BN4)heaters.
Pulling the sender is easy. The access panel is in front of the right forward rear seat. Remove the 4 screws and the plate. You are now looking at the top of the sender, tie a string or secure the sender wire with a pair of hemostats(locking type), now remove the wire, pull the 5 screws from the sender and lift it out slowly so it drains into the tank, not on it. Now you can see all the way to the fuel pick up
Pull the seats and engine cover to check all the lines. Also check any hoses and connections to gas fired(BN4)heaters.
Pulling the sender is easy. The access panel is in front of the right forward rear seat. Remove the 4 screws and the plate. You are now looking at the top of the sender, tie a string or secure the sender wire with a pair of hemostats(locking type), now remove the wire, pull the 5 screws from the sender and lift it out slowly so it drains into the tank, not on it. Now you can see all the way to the fuel pick up
Jim,
That reminds me...thank you for giving me the fuel can spout. The fuel gauge is not accurate on the 712. I ran out of gas in the middle of nowhere. I was able to pour in the extra five liters from the jerry can, which got me to town no problem.
Between the two pinzies, I have a very long shopping list going! First is a good set of tires for the 712, then I can at least pass inspection.
-Evan
That reminds me...thank you for giving me the fuel can spout. The fuel gauge is not accurate on the 712. I ran out of gas in the middle of nowhere. I was able to pour in the extra five liters from the jerry can, which got me to town no problem.
Between the two pinzies, I have a very long shopping list going! First is a good set of tires for the 712, then I can at least pass inspection.
-Evan
Half way there!
I would suspect a hole or problem at the fuel pick up line ~ pull the systen as stated by others, fix and carry on!
Pinzing is AWESOME.
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
- mockingbird812
- Posts: 112
- Joined: Tue Jun 20, 2006 2:46 pm
- Location: Queen Creek, AZ
Jim,
The sender is out and yes I can see what i think is my pick up tube (slanting from the top front of the tank to the bottom back of the tank) but I can not reach it or work on it thru that small access hole (sending unit hole). Do I need to drop my tank to gain access to the pick up tube to analyze (repair) it?
Thanks
The sender is out and yes I can see what i think is my pick up tube (slanting from the top front of the tank to the bottom back of the tank) but I can not reach it or work on it thru that small access hole (sending unit hole). Do I need to drop my tank to gain access to the pick up tube to analyze (repair) it?
Thanks
Sam
'71 710K
'71 710K
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- Posts: 1704
- Joined: Wed Apr 14, 2004 3:42 pm
- Location: San Bernardino Ca
- Contact:
Ok, here is the way to check the tube without removing it: Pull the drain plug and the tank end is exposed. Plug it with a finger tip and either use a vacuum pump on the other end or low air pressure, or your mouth to charge pressure or suck and see if it leaks down. If it does not leak, replace the fuel lines to the pump(filter included) and block off the heater fuel supply hose. Also check for gas smell in the oil (bad pump diaphram).
That should get you there!
That should get you there!