New Holland TB 120 Diesel Fuel Injection Pump Problems - Timing problem - (2020)

This is a real-world repair follow-up, not a general overview: the owner rebuilds a fuel injection pump on a 16-year-old New Holland TB120, reinstalls it, and hits a timing problem causing hard starting and heavy smoking. He explains the pump's timing spec (29 degrees at the pump, 28 at the flywheel), takes it to a dealer for retiming, reinstalls it, and shows the tractor running clean afterward. Best for owners troubleshooting similar injection pump or hard-start/smoking issues.

An owner-operator documenting his own DIY repair and dealer visit on his personal tractor, not a professional mechanic or dealership channel.