Why won't my Truck start after tune up?

If your truck won't start after a tune-up, it could be due to several reasons. Common issues include improper installation of spark plugs or wires, a disconnected battery terminal, or a malfunctioning ignition system. Additionally, if the fuel system wasn't checked or serviced, it might also prevent the engine from starting. It's best to revisit the areas that were serviced during the tune-up to ensure everything was done correctly.