Why will your 1992 Buick Roadmaster with 5.7 engine start cold but not start when it gets warmed up?

If your 1992 Buick Roadmaster with a 5.7 engine starts cold but not when warmed up, it could be due to a few issues. Common causes include a faulty ignition system, such as a failing coil or spark plugs, which may work when cool but fail under heat. Additionally, problems with the fuel system, such as a clogged fuel filter or a weak fuel pump, might prevent proper fuel delivery when the engine is hot. Finally, a malfunctioning sensor, like the coolant temperature sensor, could also lead to incorrect fuel mixture and starting difficulties when warm.