jcmartin606
Cadet
- Joined
- Dec 20, 2009
- Messages
- 8
my Yamaha's running really rough I check the spark plugs and they were black so Im going to replace those but is there anything else I need to check that might smooth out the idol? the jet skis running at almost 50 miles an hour which is good. compression is 120 PSI on all three cylinders.