FSH 210 Sport
Jetboaters Fleet Admiral
- Messages
- 7,266
- Reaction score
- 9,008
- Points
- 512
- Location
- Tranquility Base
- Boat Make
- Yamaha
- Year
- 2020
- Boat Model
- FSH Sport
- Boat Length
- 21
the port engine has been running a little rough in the cooler weather on initial startup... and the RPM's are 200 RPMs low at idle... runs fine when warmed up and pulls 10,200 WFO...
so i plugged in YDS and warmed up the engines and ran through the diags... no codes saved, all the hours are between 6000-8000 RPM's and port engine drop cylinder test on #1 cylinder barely drops the RPM so that is the suspect...
68 hours on both engines since new... they seem happy... I was gonna swap the plugs at 100 HR's any way
So you think it’s a plug?