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Posting a reply to: RE: 75 hp Merc Optimax issues???

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Landry

Posted 6/26/2011 8:19 PM (#504551 - in reply to #504369)
Subject: RE: 75 hp Merc Optimax issues???

Posts: 1023

Bought a new battery - took it out and the same trim/rpm problem was there. Motor ran a little inconsistent/rough too - it skips at low rpm's once in a while.
Checked batteries periodically after ripping around full out for 45 minutes - 13+ volts sometimes and 12.5 others???? Finished at 12.7??
I dunno but what I do know is that the rpm/shift problem is new and still there - only noticeable in forward at lower rpm's (rpm's drop by 50% and then shoot up when I stop trimming) and not at all in neutral.

Last year I blew 3 ignition coils under warranty and I am starting to wonder if this problem is on its way back - before that happened I had a few engine skips similar to what I am seeing now.
Ironically, I have a Mazda MPV and it blows ignition coils all the time.

Landry