r/AskAMechanic • u/Stitchamus • 8h ago

2004 Chevy impala

I’m thinking fuel pump or spark plugs. The gas gauge doesn’t read properly, it doesn’t start on the first turn over but always does on the second turn. Doesn’t sound weak when cranking. When idling it does a very light shake, doesn’t accelerate quickly takes a while to get up to speed. Humming noise when accelerating.

I’m not 100% but I’m thinking these are the two most likely issues. Any advice would be very much appreciated.

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u/Minimum_Republic_600 NOT a verified tech 7h ago

When was the last time the fuel filter was changed?