Toyota HiAce Diesel Problems
How to start a car in the cold
Could be a problem with the glow plugs. If the glow plug light doesn’t light up when you turn the ignition on it could be a problem with the glow plugs or the control unit.
HiAce blowing smoke
Normally, I would be thinking it’s the turbo, but the fact the performance hasn’t been affected would suggest it’s not. Check the injectors, it could be that they’re worn and in need of replacement.