Automatic Belt Tensioner
An automatic timing belt tensioner makes sure of correct timing belt tension. An additional spring-loaded cam provides proper belt tension during operation. The belt tensioner can operate 30 degrees either side of its central position.
The basic adjustment of the belt tensioner can no longer be controlled after the aligning tools and adjusting pin have been taken out (the spring forces from the valve train exert pressure on the timing belt and alter the position of the belt tensioner).
The 2.0L Zetec engine is equipped with a glass fiber-reinforced plastic intake manifold. The intake manifold ports are designed so the intake paths are the same length for all the cylinders.
- This gives the following advantages:
- reduced heat transfer to the injectors, thereby avoiding vapor locks
- lighter weight
- reduction of fuel deposits on the intake walls during cold starts
- less heating of the intake air when the engine is hot
The crankshaft runs on five bearings and has a counterweight for each cylinder. The central main bearing has two bearing half shells which guide the crankshaft along its axis as well as adjusting the end float.