SparkieBoat
Captain
- Joined
- Aug 17, 2009
- Messages
- 3,643
I have been having problems with my motor, I have now fixed all of the problems since I purchased the motor, down to the last one I think. i have a 19 pitch prop on a 17.5 McKee Craft..I been getting just over 5K rpms and it seems to just bog out past that..I put a 17 pitch prop on the boat and it reached the exact same rpms and did the same thing. I read this on CDIs website
Johnson/Evinrude Optical Ignition Troubleshooting
Troubleshooting the Johnson/Evinrude 60? 6 Cylinder Ignition (OIS 2000)
1991-2006 Model Years (Continued)
High Speed Miss:
1. If the engine runs fine until you get above 4900 RPM and then starts missing, check the Orange to
Orange/Black power coil wires with an oscilloscope (If available) or replace the pack. A breakdown inside
the pack could cause RFI noise to activate the rev limiter for no apparent reason.
2. Using the Piercing Probes and DVA adapter, check the DVA voltage at the RPM where the problem is
occurring while connected as follows:
Red Lead Black Lead DVA Bank/Cylinder
Brown Brown/Yellow 150V + Starboard (1,3,5)
Brown/White Brown/Black 150V + Port (2,4,6)
NOTE: The readings should rapidly increase as the engine RPM increases and stabilize below 400 volts (voltage
exceeding 400 V DVA indicates a bad pack). A sharp drop in voltage right before the miss becomes apparent usually
indicates a bad stator charge coil.
3. Connect an inductive tachometer to the spark plug wires one at a time and compare the readings. If most of
the cylinders show the same reading and one or two show different readings, check the primary wires with
the inductive pickup to see if the readings are the same coming out of the power pack. A difference in
readings between the primary and secondary coil wires usually indicate bad ignition wires. No difference
indicates a bad power pack.
So my question is; Is there anyway to bypass the rev limiter on my power pack? It appears to be the original OEM power pack. I assume it may have the same problem outlined in the CDI web Site.
Johnson/Evinrude Optical Ignition Troubleshooting
Troubleshooting the Johnson/Evinrude 60? 6 Cylinder Ignition (OIS 2000)
1991-2006 Model Years (Continued)
High Speed Miss:
1. If the engine runs fine until you get above 4900 RPM and then starts missing, check the Orange to
Orange/Black power coil wires with an oscilloscope (If available) or replace the pack. A breakdown inside
the pack could cause RFI noise to activate the rev limiter for no apparent reason.
2. Using the Piercing Probes and DVA adapter, check the DVA voltage at the RPM where the problem is
occurring while connected as follows:
Red Lead Black Lead DVA Bank/Cylinder
Brown Brown/Yellow 150V + Starboard (1,3,5)
Brown/White Brown/Black 150V + Port (2,4,6)
NOTE: The readings should rapidly increase as the engine RPM increases and stabilize below 400 volts (voltage
exceeding 400 V DVA indicates a bad pack). A sharp drop in voltage right before the miss becomes apparent usually
indicates a bad stator charge coil.
3. Connect an inductive tachometer to the spark plug wires one at a time and compare the readings. If most of
the cylinders show the same reading and one or two show different readings, check the primary wires with
the inductive pickup to see if the readings are the same coming out of the power pack. A difference in
readings between the primary and secondary coil wires usually indicate bad ignition wires. No difference
indicates a bad power pack.
So my question is; Is there anyway to bypass the rev limiter on my power pack? It appears to be the original OEM power pack. I assume it may have the same problem outlined in the CDI web Site.
