Manual transmission (Opel Vectra B)

Extraneous noise in neutral gearbox position:

• input shaft bearing worn out (the noise is heard when the clutch pedal is released);
• the clutch release bearing is worn out.

Noise when only one gear is engaged:

• the teeth of the gear of one gear are worn or damaged.

Difficulty shifting gears:

• clutch damage;
• worn or damaged gear shift rods;
• the gear shift rods are not adjusted correctly;
• synchronizers are worn out.

Knocking out gears:

• the gear shift rod is worn or damaged;
• the gear shift rods are not adjusted correctly;
• synchronizers are worn out;
• the gear shift forks are worn out.

Vibration:

• low oil level;
• bearing wear.

Oil leaks:

• wear of differential sealing rings;
• input shaft seal wear.