* Hard starting: The engine will crank for longer and may not start at all, especially when cold.
* Uneven running: The cylinder without the glow plug might not fire consistently, leading to rough idling and potential misfires.
* Increased wear and tear: The increased strain on the starter motor and other components can shorten their lifespan.
* Increased emissions: Incomplete combustion due to poor ignition in one cylinder can result in higher emissions.
While you *might* get away with it for a short period, it's not recommended. Replacing the faulty glow plug is the best solution.