First time post and thanks in advance for any advice that you may have too offer.
350 Mercruser Alpha I / Bravo I - year 2001. This has the freshwater enclosed cooling jacket. Here is what is happening. I want from a sustained cruse of about 1500 RPM to about 3000 and I noticed that my oil pressure dropped immediately, like you disconnected the power. I killed the motor immediately and checked the oil but it was up to the top. I noticed that the out drive oil reservoir was low so I added oil to top it off. I went back to ~1500- 1800RPM cruse and the pressure did not drop again. The next day I tried the higher RPMs again but everything seemed fine, until I went to idle. The pressure seemed to be quite low, about 1/8th so I gave it some throttle and to my surprise, the pressure dipped to negative and then quickly came back to the mid range. I am very confused as to what is going an and would appreciate any help.
350 Mercruser Alpha I / Bravo I - year 2001. This has the freshwater enclosed cooling jacket. Here is what is happening. I want from a sustained cruse of about 1500 RPM to about 3000 and I noticed that my oil pressure dropped immediately, like you disconnected the power. I killed the motor immediately and checked the oil but it was up to the top. I noticed that the out drive oil reservoir was low so I added oil to top it off. I went back to ~1500- 1800RPM cruse and the pressure did not drop again. The next day I tried the higher RPMs again but everything seemed fine, until I went to idle. The pressure seemed to be quite low, about 1/8th so I gave it some throttle and to my surprise, the pressure dipped to negative and then quickly came back to the mid range. I am very confused as to what is going an and would appreciate any help.
