Join Date: Jul 2010
Location: Newport News, VA
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I just read some of the comments from people; let me try to answer some of your questions. By the way thanks for the quick responses!
-This problem has always been around, even after the boatís hull was just painted and the prop/shaft cleaned. The boatís performance and handling of course improved but just couldnít get the higher RPMs.
-I have tried to increase the RPMs while at dock and the engine in neutral, no improvement.
-About a year and a half ago my father hired a diesel mechanic to remove the fuel tank and clean in out. He also added a fuel/water separator filter system before the lift pump. I believed there was some improvement at that time, but even the mechanic commented on how the engine just didnít get up to the rated RPMs.
-A co-worker suggested it could be the fuel injectors and need to be inspected and even clean. He recommended getting a five-gallon can of fuel and add diesel fuel injector cleaner and run it through the system and look for improvement. But he also suggested using an aerosol fuel injector cleaner, if I didnít want to bother using the liquid form, any suggestions on that part?
-Before I do anything else, I do plan to change out the fuel filter and of course bleed the lines. Also, disconnect the throttle linkage and see if I can manually push it up to the rated RPMs. I also plan to replace the air filter/screen assembley.
-As for the prop size, I donít know for sure. Itís a simple two-blade prop, but I will have to look up the diameter and pitch.
Keep the questions coming...given me a lot of ideas!