I recently installed a Fass 150/150 and for the first two weeks on the truck when I would turn the key on I could hear the pump run for roughly 3 seconds to prime and the truck would fire right up. Yesterday I noticed when I started the truck the pump only primes for like 1 second and stops. All day yesterday and today would only prime for 1 second then stop. The truck still starts right up just as before and no problems have been noticed. Just curious how long the pump on others usually primes at first? Or any ideas or comments. Thanks.