Home Forums General Discussion Technical Questions Mowrey so1 old relay hydro

First run of the day everyday car slams up past floor maybe on the ring?
Very violent slam then levels down , also on first run down passes floor and levels up.
2 stop. After this happens once the car runs good the rest of the day? Any ideas

Put an oil heater in the tank and check it.

might have sticky valve, broke spring, or slightly bent stem. think about replacing/rebuilding valve. I'll bet it occasionaly does it at other times also and they don't report it. Cold oil can do it, but usually takes more than 1 trip to heat oil back up.

+1 on the valve. Oil takes more than one run to heat up.

Maybe it's the UMS coil not dropping out. If the car misses the slowdown it could shoot through the floor. Did you check the Terminal slow down switch?

I didnt check the switch because it works all day after the first run
Valve and oil is were im at so far