23-05-2015, 09:34 AM
My mate had a similar problem with a transit, reduced range on a tank of fuel.......but when I was with him at a fuel stop, he undid the tank cap and I heard the "thunnk " noise, indicating a tank breather problem.
The plastic tank had collapsed due to no "breathing" ( crushed tank due to tank vacuum ) and bent the fuel pick up pipe and fuel gauge sensor!!
The "thunk" noise was the plastic tank returning to its normal size.
So he would put fuel in the tank and the gauge would read full, but he had a vastly reduced range "due to the bent pick up pipe" and was running out of fuel. This happened several times until the day he gave me a lift and stopped for fuel.
The plastic tank had collapsed due to no "breathing" ( crushed tank due to tank vacuum ) and bent the fuel pick up pipe and fuel gauge sensor!!
The "thunk" noise was the plastic tank returning to its normal size.
So he would put fuel in the tank and the gauge would read full, but he had a vastly reduced range "due to the bent pick up pipe" and was running out of fuel. This happened several times until the day he gave me a lift and stopped for fuel.