Create a Python list comprehension to find the sum of even numbers from two given lists.
[1, 2, 3, 4]
[9, 8, 7, 6]
even_nums_sum = [x + y for x in [1, 2, 3, 4] for y in [9, 8, 7, 6] if x % 2 == 0 and y % 2 == 0]
print(sum(even_nums_sum))