One day I was driving down the highway at 65 MPH weight 80k lbs and my truck turned off on me. Turns out fuel is not traveling between tanks and I had run out of fuel on the passenger side. The passenger side tank is being used 80 percent more than the driver side.
Took it to a mechanic and he said there's a valve that's between the tanks which is probably bad. Then he changed his mind and said it was just debri and the valve was fine. Then it happened again. Then he's trying to tell me it'll take 10 hours of diagnosis to fix because he has to put a camera inside to see where the problem is (which would cost me over $1000). To me it sounds like he's just trying to make money. Should I just change the valve? Any advice is appreciated
Fuel is not traveling between tanks
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by JohnSmith69, Nov 16, 2020.
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Your tank vents could be plugged.
Or a cracked pickup tube.
Or something blocking the pickup tube.
Splitter valve could be plugged.
Loosen a fuel cap and listen for pressure buildup.
Do the tanks equalize after sitting for a while?singlescrewshaker and blairandgretchen Thank this. -
Vents in caps - shut off valve in crossover line.
$1,000?
Bring it to me and we’ll figure it out over a 30 pack.D.Tibbitt, Itsbrokeagain, JohnSmith69 and 4 others Thank this. -
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Disconnect driver side lines from splitter and blow them with the air gun . Fixed it for me , since February . Exactly the same ...i checked breathers and splitter first
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Put one of these in your tool boxJohnSmith69 and LtlAnonymous Thank this. -
As a temporary fix open fuel cap slightly this will break the vacuum. Fuel should equalize the tanks
JohnSmith69 Thanks this. -
Run from that guy. He's trying to hose you IMO.
650cat425, JohnSmith69, lester and 1 other person Thank this. -
It's 1 of 2 things
#1 The vent tube is blocked on the drivers side.... to check fell the drivers side full and passanger side 1/2 or less, park the truck turn the truck off and crack both caps a little. Check the level about 1hr later, they should be the same... if so take off the vent tube and blow it out or replace it.. if not #2
#2 you have a blocked fuel pickup or block fuel line. To check disconnect THAT fuel line as far away fron the fuel tank as posable and blow it out until air is blowing into the tank. 2 or 3 times then hook it back up and see it they equalize.. if so that was your problem.... now if #2 fixed it you need to check your tank... (you can get a cheap endoscope "bore scope") for under $100. You need to see if there is any junk in your tank...... an old way to F someone you didn't like is to throw a pice of plastic bag in someone tank... it will float around forever until it gets sucked into the fuel line. If you just blow it out it will do it again...JohnSmith69 Thanks this. -
You could probably replace both tanks, and everything in between them for that much money. Jesus.
JohnSmith69 Thanks this.
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