A lot of our Roseville calls come from the brick ranches along Gratiot Avenue, built in the 1950s with one pipe steam. The usual story: the boiler keeps shutting off and on, and the back bedroom never warms up. Quick observation first. We watch one full cycle with the pressure gauge in view before we change anything.
If the burner shuts off on pressure every few minutes, the steam isn't going anywhere. That points to air that can't escape. We check the main vent at the end of the steam main, then the radiator vent in the cold room. A vent that's painted over or crusted with minerals holds the air in, and the boiler builds pressure instead of heat.
Then we look at the radiator itself. In one pipe steam the supply valve has to be fully open, and the radiator has to pitch back toward that valve so condensate drains. A shim under the far legs fixes more cold radiators than people expect. We also confirm the pressuretrol isn't still set at 5 psi from some old service.
Once the venting is right, the cycles stretch out and the cold room catches up. A Roseville ranch usually needs a vent or two, not a new boiler. If the house is one of the early 1960s colonials off Utica Road, we switch gears and check the steam traps instead, since two pipe systems fail a different way.