I HAVE A MERCURY 115 HP OUTBOARD THAT WAS JUST REMANUFATURED IM HAVING A FUEL PROBLEM I HAVE TO KEEP SQUEEZING THE BULB TO GET FUEL THE MOTOR IDLES GREAT BUT AS SOON AS I GIVE IT GAS IT DIES OUT AND THE BULB IS EMPTY AGAIN THE CARBS ARE OK SOME ONE TOLD ME TO CHK THE VENT HOSE BUT THATS CLEAR.COULD I HAVE A BAD TANK I ALREADY CHANGED ALL THE FUEL LINES UP TOP