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Help from the brain trust is requested.
We have a pair of 2004 300 HPDI's on our boat and after sitting for two years I am bound and determined to get back on the water and use the boat or sell it. After throwing away 250 gallons of gas, flushing the lines and tanks, changing the filters and the spark plugs the motors fired up and ran just fine. Then I decided to work on the wiring in the center console because I would have multiple hots and grounds on a single screw. I wanted to make it one wire to one screw. Anyway I fired the motors up one at a time on the ear muffs and everything look good. Spent an hour at the gas station filling the boat back up and then headed to the marina and dropped the boat in the water. Again both motors fired up like they are suppose to, backed off the trailer and tied the boat off. I really don't recall looking at the FMG because I was jacking with the other electronics as we went through the marina so I assumed that things were working okay. Rolled the throttles up, planed the boat off - everything good. At that time I noticed the the FMG was reading 0.0 and I had already gone about a mile so something should have shown up. At 35 MPH I went to adjust the motor trim and then I felt shudder, for lack of a better term, followed by a WTF. I thought that I might have run over something at that exact time but looking back I did not see anything. Pressed the button again and again another shudder. Pulled the throttles back to neutral and sat there trying to figure out what was going on. This time I only pressed the starboard motor trim and it killed the motor, not good. After many choice words I turned the key and the motor fired right up - so back to the dock and load up. While running back to the dock I noticed that the Lenco trim tab switch did not have any lights showing. Back at the shop I clipped off what seemed like 100 zip ties holding all of the wires together. Traced all of the wires and did not see anything that would make me go - there's the problem. Went ahead and disconnected all of the Lenco wires. Fired up the motors, tested all of the motor trims and everything worked just fine, good day. I then went to work on the FMG. I checked all of the connectors, pulled them apart, checked for corrosion, and put them back together again - still 0.0. Check for voltage back at the sending unit and had 5.? volts and good ground. I did not check the voltage out as I did not want to pierce the shielding that might allow some corrosion to start.
By the way the tach's have been working all through this and I assume the Sync on the FMG as it works at the shop right now.
So...that's my story.
Any ideas?
Thanks in advance, Andrew
We have a pair of 2004 300 HPDI's on our boat and after sitting for two years I am bound and determined to get back on the water and use the boat or sell it. After throwing away 250 gallons of gas, flushing the lines and tanks, changing the filters and the spark plugs the motors fired up and ran just fine. Then I decided to work on the wiring in the center console because I would have multiple hots and grounds on a single screw. I wanted to make it one wire to one screw. Anyway I fired the motors up one at a time on the ear muffs and everything look good. Spent an hour at the gas station filling the boat back up and then headed to the marina and dropped the boat in the water. Again both motors fired up like they are suppose to, backed off the trailer and tied the boat off. I really don't recall looking at the FMG because I was jacking with the other electronics as we went through the marina so I assumed that things were working okay. Rolled the throttles up, planed the boat off - everything good. At that time I noticed the the FMG was reading 0.0 and I had already gone about a mile so something should have shown up. At 35 MPH I went to adjust the motor trim and then I felt shudder, for lack of a better term, followed by a WTF. I thought that I might have run over something at that exact time but looking back I did not see anything. Pressed the button again and again another shudder. Pulled the throttles back to neutral and sat there trying to figure out what was going on. This time I only pressed the starboard motor trim and it killed the motor, not good. After many choice words I turned the key and the motor fired right up - so back to the dock and load up. While running back to the dock I noticed that the Lenco trim tab switch did not have any lights showing. Back at the shop I clipped off what seemed like 100 zip ties holding all of the wires together. Traced all of the wires and did not see anything that would make me go - there's the problem. Went ahead and disconnected all of the Lenco wires. Fired up the motors, tested all of the motor trims and everything worked just fine, good day. I then went to work on the FMG. I checked all of the connectors, pulled them apart, checked for corrosion, and put them back together again - still 0.0. Check for voltage back at the sending unit and had 5.? volts and good ground. I did not check the voltage out as I did not want to pierce the shielding that might allow some corrosion to start.
By the way the tach's have been working all through this and I assume the Sync on the FMG as it works at the shop right now.
So...that's my story.
Any ideas?
Thanks in advance, Andrew
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