What causes a Rover 400 to be hard to start?

A Rover 400 may be hard to start due to several factors, including a weak battery, faulty starter motor, or poor fuel delivery from a clogged fuel filter or failing fuel pump. Additionally, ignition system issues such as worn spark plugs or a malfunctioning ignition coil can contribute to starting difficulties. Other potential causes include sensor malfunctions, particularly the crankshaft position sensor, or issues with the engine's air intake system. Regular maintenance can help mitigate these problems.