Cook bacon in a large Dutch oven over medium heat 6 minutes or until crisp. Drain bacon on a paper towel, and crumble.
. Add onion to pan, and sauté 3 minutes. Add potato; sauté 2 minutes or until lightly browned. Lightly spoon flour into a dry measuring cup; level with a knife. Stir flour into potato mixture, and cook 1 minute. Add clam juice, and stir well. Stir in milk; cook over medium-low heat 11 minutes or until thick and bubbly. Cover, reduce heat, and simmer 11 minutes or until potato is tender.
. Drain clams, reserving 2 cups liquid. Stir in clams and reserved clam liquid, and cook 2 minutes or until thoroughly heated. Stir in parsley, pepper, and salt. Ladle into bowls; top with crumbled bacon.