Things You'll Need
Instructions
Clean and oil the air filter. Find the air filter on your RC car and remove it. Wipe a mixture of soap and water onto the filter. Dry the filter off once it has been completely coated with soap and water. Rub oil onto the filter.
Drain the nitro fuel if it has been sitting in the tank for a year or more. Old fuel corrodes quickly and eats through the fuel line and tank. Pour the old fuel out and replace it with fresh nitro fuel.
Replace the glow plug. A faulty glow plug causes the engine to idle improperly or shut off. Replacing the glow plug reinvigorates the engine.