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| Author |
Message |
    
Joe Cesar
New member
Username: paulaspal
Post Number: 1
Registered: 07-2009
| | Posted on Friday, July 24, 2009 - 09:30 am: | 
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At idle and up to 1500 rpm my starboard tach jumps up and down several hundred rpms and continues to do so until I hit crusing revs of 3200. Port tach is fine. Any ideas as to why this is happening? Engines are Marine Power 454 EFI's |
makomark
Advanced Member
Username: makomark
Post Number: 955
Registered: 09-2008
| | Posted on Friday, July 24, 2009 - 01:27 pm: |
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Could be the tach itself or a bad connection. One way is to swap tachs, port<-> starboard. if the Jump Syndrome goes with the tach, replace it. otherwise, start checking/cleaning/reseating connections. |
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