| Author |
Message |
    
stuart erny
New member
Username: kystuart
Post Number: 1
Registered: 06-2009
| | Posted on Saturday, July 04, 2009 - 05:36 pm: | 
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I have a 2000 70hp johnson that i need some help with. At first it will run good for about 2 min that is full throttle about 5000 rpm and then it will kick down to about 1700 rpm and will go no higher. I have replaced the powerpack but it did not help. It is not giving me any alarms and does not seem to be running hot. I have also replaced the spark plugs. If anyone can help let me know THANKS |
Joe Reeves
Senior Member
Username: joereeves
Post Number: 7587
Registered: 02-2001
| | Posted on Saturday, July 04, 2009 - 08:44 pm: |
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If you shut the key off, then restart the engine, do you then have the high rpms again for a short time? |
stuart erny
New member
Username: kystuart
Post Number: 2
Registered: 06-2009
| | Posted on Sunday, July 05, 2009 - 08:25 am: |
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No it will stay the same. when i let it sit over night it will do it again. |
Morten Ringvold
Senior Member
Username: haffiman37
Post Number: 3895
Registered: 04-2006
| | Posted on Sunday, July 05, 2009 - 08:39 am: |
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Is the rpm reduction only under load, or is it even un-loaded? (does it rev up in neutral?)
Which spark plugs are You using? |
stuart erny
New member
Username: kystuart
Post Number: 3
Registered: 06-2009
| | Posted on Sunday, July 05, 2009 - 09:45 am: |
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it kicks down under a load. when in neutral you can hear that the motor does not sound just right. I replaced plugs with the stock plugs that omc calls for. |
