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    Motor knocking. Mercruiser 3.0 alpha 1

    I know it has been some time but I wanted to honor my word and report back when I got the motor fixed. Without further ado, it was my lifters. This process has been such a learning curve for me. I would like to thank all those who replied and helped to kept me motivated in resolving this issue...
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    Motor knocking. Mercruiser 3.0 alpha 1

    Thanks for the tips guys. When I get there I will let you know what I find.
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    Motor knocking. Mercruiser 3.0 alpha 1

    I forgot to mention all cylinders were pressures tested all were between 130-135 psi.
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    Motor knocking. Mercruiser 3.0 alpha 1

    Sorry didn't see to oil pressure question. When hot its about 22 psi at 2000 rpm 30 psi at 3000 rpm and 40 psi at 4000 rpm. I rarely ever run it at or over 4000 rpm.
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    Motor knocking. Mercruiser 3.0 alpha 1

    Fuel pump was replaced along with the fuel lines. I cannot hear the noise with my stethoscope at the pump only the timing gears. Noises can travel though.
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    Motor knocking. Mercruiser 3.0 alpha 1

    Thanks I will do that. I did forget to mention It was run with the belt off and the noise was still there. It was one of the first things I did to rule out the water pump.
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    Motor knocking. Mercruiser 3.0 alpha 1

    Welp life happens and I was not able to work on my boat for some time. I now again have some free time and wanted to post again here to explain what I have done and found. To start I am positive the noise is coming from the timing gear cover. The video I posted makes the noise seem excessively...
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    Motor knocking. Mercruiser 3.0 alpha 1

    I will keep watching this page and post when I find the issue.
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    Motor knocking. Mercruiser 3.0 alpha 1

    Was hoping for a little advise here. My motor is knocking from the front lower end only after warm up. I put my stethoscope on the motor and it is loudest right behind the harmonic balancer on the cover plate. Motor is run on ethanol free 93 octane gas. Oil and filter have been changed. Using...
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