Home › Forum › Ask A Member › ’83 15hp, no power at top end › Re: ’83 15hp, no power at top end
This one doesn’t. To my knowledge, I don’t think any of the 74-93 run 9.9/15’s have a flywheel index. I usually just stick a pencil into cylinder 1, find a common reference point (i.e. shifter boss), and then use a light to at least see if the corresponding cylinder is firing near TDC.
I am putting my money on worn/distorted leaf valves on this one. I replaced both, and now even when turning over the flywheel with my hand slowly I get the familiar noise owl ‘WHOOO’ as each plate vibrates during induction. Wasn’t getting any of this prior to the repair.
If this doesnt solve the problem I’ll be back to pester folks with more questions. Won’t know until tomorrow AM – just buttoning the motor back up now and then turning in for the night. Back at it at 9am tomorrow!