Fuel Filter Housing Leak? - Chevy and GMC Duramax Diesel Forum Oct 18, 2010I have noticed that there has been a small amount of fuel on top of my fuel filter housing and the truck takes considerably more to crank in the morning. Is there something I should be looking for or is there a easy fix? If it has to be replaced I might as well go for the Airdog and delete it all together. Thank you for any advice and insight.Author: RtbmrglChevy and GMC Duramax Diesel Forum - Bad Fuel leak and iOct 28, 2016Fuel Filter Housing Leak? - Page 3 - Chevy and GMC DuramaxMar 09, 2013fuel filter housing leak - Chevy and GMC Duramax Diesel ForumJan 12, 2011Chevy and GMC Duramax Diesel Forum See more results DIY Duramax Fuel Fix for Leaky Filters - Diesel World External fuel leaks can develop as well, and will be evidenced by fuel puddles on the ground or on top of the filter assembly. If you have a high-mileage Duramax-powered truck and suspect that it’s losing its prime, or you have seen evidence of fuel leaks from the filter head, you’ll want to address the problem as soon as possible.