The beer in the line from my keg looks fine, no foam all the way from the keg to the tower. Open the cap at the top of the tower and the line is all foam right there. Somewhere inside the tower the beer turns to foam. All that comes out of the faucet is foam.
Beer line ID: 3/16"
Beer line length: tried 5ft, 4.5ft, 4ft, and 3.5ft
Distance from center of keg to faucet: 2.5ft
Temperature inside kegerator: 36 degrees
PSI: 10, 14, and 18. Same situation at all pressures.