1999 Johnson 115hp (Eagle)

[ZL]

It randomly started missing mostly above 2500rpm, Next start-up sometimes it runs perfect, then the next day it may miss again or not. It is a constant miss and it is hard to plane off the boat sometimes.

The motor starts and idles perfect even though it seems to be getting a little more difficult each time out. I cleaned the carbs, drained the gas for any sign of water, changed the fuel pump, changed the gear oil, and cleaned all connectors and fuses. Also thought it might have been the ignition/kill/choke switch so i disconnected the black/yellow kill wire and it still missed, after fishing a little while it cranked up and ran off perfect, then back to crap again.

Motor: 1999 Johnson 115hp V4 Eagle ,JPLEEM, OIS(optical ignition system), still using the oil injection.

This is killing me.

[ChampioNman]

Sounds like the PP is heading to the bone yard.

[ZL]

Thanks Championman, I figured it was something electrical, most likely powerpack, but wanted a second opinion. Have any idea on the ohms readings between the leads on the PP. Plan on heading down to the boat shop tomorrow to pick one up and a manual. I knew the Mercs, but hesitant to touch my Johnson until I get familiar with the new family.

[ZL]

Changed Power Pack today with the factory replacement and all was a go. Never missed once.