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I just wanted to give a huge thanks to Justin at SBMAR.
Last week, I noticed that I started to loose power on my QSC 8.3 with about 1630hrs. I was happening randomly and the seem to resolve. Yesterday it did it again. It almost felt like the engine was surging. Some things that I noticed was the engine was burning 4-6gals an hour more than normal. Engine load was showing 97% load at 86% throttle about 2350rpm. The engine finally threw a code on my vessel view. 281 Cyl Press Imbalance error. https://www.blog-teknisi.com/2018/08/spn-1347-fmi-7-fault-code-281.html
I was thinking that I needed to replace my fuel pump. I called SBMAR this morning to try and get a direction to trouble shoot. They suggested replacing the fuel actuator and then try the fuel pressure sensor. I was on a time crunch to trouble shoot while the boat was still in the water. my local Cummins dealer had both parts in stock so I picked them up. I changed the actuator first and noticed the same issue about 100yards away from my dock. I went back and replaced the fuel sensor and went for another ride. No issues after about 30-45mins of use.
Again, huge thanks to Justin
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