Massey 65 oil pump

[CedarHedgeFarm]

Have a Massey 65 4 cylinder gas. Have replaced and set carb. Have since I got it had low oil pressure. Wondering if the oil pump is gone. Temp seems to just increase slowly and having issues under load. Water pump and temp valve seem ok. When first running as engine heats up can see the temp go up to the valve release and then drops back after that it just slowly climbs. Figuring on a full rebuild winter 25-26 but had hoped to get through this season.

 

[Jim.ME]

Have a Massey 65 4 cylinder gas. Have replaced and set carb. Have since I got it had low oil pressure. Wondering if the oil pump is gone. Temp seems to just increase slowly and having issues under load. Water pump and temp valve seem ok. When first running as engine heats up can see the temp go up to the valve release and then drops back after that it just slowly climbs. Figuring on a full rebuild winter 25-26 but had hoped to get through this season.

Welcome to the forums.

What is the oil pressure, cold and at operating temp? Giving the pressure in pounds is better than the low oil pressure statement.

Does the gauge you have readings in psi and what is the scale of the gauge (zero to what)? Have you checked it with a known good gauge?