Serial number 62244 15hp Nissan 1986 model. This is on my nephew's 15 ft aluminum Polarcraft flat bottom. It will just get on plane but not build full rpm. Here is a list of things I have checked and tried with no change in problem.
1. Checked compression and it was 150 on each cylinder.
2. Checked spark with tester and it showed a very solid blue line on both spark plugs.
3. Checked resistance on red wire from stator (should be 200-300 according to CDI) and it reads 280.
4. Checked resistance on blue wire from trigger (should be 30-46 according to CDI) and it reads 42.
5. Checked DVA on red wire (should be 110 v min) and it checks 260 cranking and the same running.
6. Checked DVA on blue wire (should be 4 v min) and it checked 30 cranking and running.
7. Hooked different gas tank, fuel line and primer bulb to it and there was no change.
8. Removed carburetor and cleaned it but there was no trash in fuel bowl and all jets were clean. Reinstalled and there was no change.
9. Tried squirting fuel mixture directly into carburetor throat while it was running but it made no difference.
10. Talked to tech at CDI and told them all I had done and they seemed to think the ignition pack was breaking down.
11. Ordered the pack 119-2400 which has the two spark plug wires coming out of the ignition pack, installed it and there was no change.
I am not a boat mechanic so I am at a lose as to what the problem might be. Nothing I have done has changed anything. I also took the fuel pump apart and removed the two check valves and kept the fuel bowl full with the primer bulb but it made no difference. If any one has any advice or suggestions on what it might be I would be very grateful . Thanks, Jim
1. Checked compression and it was 150 on each cylinder.
2. Checked spark with tester and it showed a very solid blue line on both spark plugs.
3. Checked resistance on red wire from stator (should be 200-300 according to CDI) and it reads 280.
4. Checked resistance on blue wire from trigger (should be 30-46 according to CDI) and it reads 42.
5. Checked DVA on red wire (should be 110 v min) and it checks 260 cranking and the same running.
6. Checked DVA on blue wire (should be 4 v min) and it checked 30 cranking and running.
7. Hooked different gas tank, fuel line and primer bulb to it and there was no change.
8. Removed carburetor and cleaned it but there was no trash in fuel bowl and all jets were clean. Reinstalled and there was no change.
9. Tried squirting fuel mixture directly into carburetor throat while it was running but it made no difference.
10. Talked to tech at CDI and told them all I had done and they seemed to think the ignition pack was breaking down.
11. Ordered the pack 119-2400 which has the two spark plug wires coming out of the ignition pack, installed it and there was no change.
I am not a boat mechanic so I am at a lose as to what the problem might be. Nothing I have done has changed anything. I also took the fuel pump apart and removed the two check valves and kept the fuel bowl full with the primer bulb but it made no difference. If any one has any advice or suggestions on what it might be I would be very grateful . Thanks, Jim