I have a 2005 135 Optimax that just started giving me problems. When I run at 3000 rpms or less it runs fine. When I try running above that it will randomly sputter like the fuel or spark is shutting off and will run very erratic. If I try to go wot it will almost completely drop to 2-3k rpms and sputter up and down. There are no alarms coming on the smartcraft monitor or beeps. Any help would be appreciated.
