2001 Johnson 90 carburetor motor with OIS.
Have traced problem to a double firing power pack, which I may have caused by not grounding plugs during comp check. Fortunately no damage to cylinders, all 4 a good 135psi. Motor still runs pretty good except for not reaching RPM past 4200 WOT. Plan to purchase CDI replacement.
Questions:
1. What other components should be checked for damage,
fuel side is good.
2. Are the diodes in the single power pack the only thing bad and is it possible to replace just diode(s)?
3. Is the CDI unit reliable or even better than OEM part as they claim.
4. Can quickstart be disabled in the CDI unit to use Joe's out of water WOT timing method? If so how?
5. This motor has high/low timing clip with no limit screws, can I still use Joe's timing method? Please elaborate.
Thanks for the help.
Craig
EDIT: Thanks to Clayton for answering these questions on a PM.
My double firing is not yet verified, timing light pick up stray signals from coils and wires. Started a new thread 2001 Johnson 90hp not revving up WOT.
Have traced problem to a double firing power pack, which I may have caused by not grounding plugs during comp check. Fortunately no damage to cylinders, all 4 a good 135psi. Motor still runs pretty good except for not reaching RPM past 4200 WOT. Plan to purchase CDI replacement.
Questions:
1. What other components should be checked for damage,
fuel side is good.
2. Are the diodes in the single power pack the only thing bad and is it possible to replace just diode(s)?
3. Is the CDI unit reliable or even better than OEM part as they claim.
4. Can quickstart be disabled in the CDI unit to use Joe's out of water WOT timing method? If so how?
5. This motor has high/low timing clip with no limit screws, can I still use Joe's timing method? Please elaborate.
Thanks for the help.
Craig
EDIT: Thanks to Clayton for answering these questions on a PM.
My double firing is not yet verified, timing light pick up stray signals from coils and wires. Started a new thread 2001 Johnson 90hp not revving up WOT.