Timing belts, also known as cambelts are a component in the engine which helps regulate the timing of the enginges valves. 

typically made of rubber, over time this belt degrades and can eventually snap causing the engine to jump or stop working altogerther. 

If the engine ceases badley you can find yourself needing to replace the engine, which can be a costly job. 

Make sure you are getting your timing belt checked to see if it needs replacing. We would be more than happy to inspect your car and provide a free, no-obligation quote if yours needs changing.