nothing to clean or test just make sure the PS cooler is bonded to the engine or add a ground from the cooler to the block
smartcraft reads zero with engine off and the pressure changes with different rpm,s so i guess the sensor works and grounding id good . its just low so i thought maybe the sensor is a little bit clogged . no way it can be clogged and need to cleaned off ?
i get 1.16 psi at idle coldstart and after a day of boating it might get down to 0.5 psi at idle . no alarms or guardian mode
that said i logged on the weekend 8 hours on the boat and the temp was always between 153 and 156 deg on the smartcraft . due to my knowledge the engine WILL overheat when there would be a restriction on the pickup.