AT4-DMAX-HD Posted December 26, 2022 Share Posted December 26, 2022 So, after replacing the fuel filter on my truck a couple times (and going through the priming process each time before starting it) I always hear a "fizzing" type of noise (presumably from the lift pump) while the trucks running. It'll keep making this noise until I take for a little drive. No check engine light or weird idle or throttle response. It runs just fine. I'm just not sure what to make of that noise. Any of you heard the strange noise as well after a fuel filter replacement? Quote Link to comment Share on other sites More sharing options...
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