Discussion Starter · #1 ·
Hey, Mike here with a 2013 lml duramax losing prime. It’s fine during the day but loses prime overnight. I thought it was my fass filters on my lift pump so I changed them, was fine for a few days but then It started losing prime again. I was poking around up front near the stock fuel filter and seen a bunch of diesel around where the prime button is. Any ideas??
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