18' SF Performance Questions

[gofastsandman]

The NGKs have blown more power packs than I can count. Also affects rectifiers/regulators and OIS. Not sure about your motah but my rude 96 150 had the same issues.
When I got it 9 years ago the tach was all over the place, Champs and a new to me tach fixed her.

Recently had the tach drop out and pulled the rectifier. Melted a tad. Easy fix and a new tach. Happiness. One of the reasons I love omc old tech is parts are everywhere and cheap in boat dollars.

Now the exchange rate for currency varies a lot. Lots of folks love their Yammis and that is fine, but the exchange rate is ridiculous.

2k for a powerpack???

It is clear to me that Yammi wants you to be on the fence. New 4 st vs old OX 2 st.`
Do I spend that or consider new???.

Now a power pack for a rude is still more than it should be, but under 300 is a far cry from 2k. This is factory not CDI. As for cdi, some folks have luck with them, but I`ll pass.

Get a gasket for the rectifier and pull it off? Melty? If your volts are running high and tach
is dancing or cutting?

[otterhound]

Thanks for all that info and will certainly check the rectifier out. I do have some other tachs so will do some swapping out. This will be my daughter's boat next year so it needs to be as reliable as possible. Thanks!
Rod

[Snookerd]

GFS is more poetic than I, but I just did a rectifier myself....one of the 1st signs of a bad rectifier is the tach jumping. Still sounds like ignition issues. I am currently working on loose flywheel magnets and Checking the stator.