Manual not shifting into gear when on

stansens

This is usually a sign of a failed pilot bearing. It allows the input shaft to stop turning when the clutch is depressed and the engine is running. As they fail it gets harder and harder to shift the trans until it simply won't go into gear while engine is running but will shift easiy with the engine off. Replaced many of these over the years. Ask a transmission shop to confirm my opinion. Hope this helps.