T8 runs rough at one point in the throttle range

[hans1159]

I have a 2008 T8 kicker that is giving me a headache. I am looking for advice. I use it for *****ing speeds ranging from 1.0 to 3.5 mph.

With my boat, I have a throttle range that if I slowly (I mean really slowly) adjust it upward toward (1.85-2.13mph), the engine will stutter and die.

Also, If I approach this throttle range slowly from the top side, it will run high for a little while (~1 minute) and then settle down at the slower 1.85 mph *****ing speed.

I have thrown a drift sock to get my engine out of this finicky throttle range, but that throws off my boat control terribly in waves and is not a long term solution.

Where should I start? Plugs? carb clean? I run only the non-oxegenated fuel (I live in MN where it is mandated most everywhere.)

Any help would be great.

Thanks,
Craig

[rkmartin]

Check the linkage to your CDI unit. If there is slack present the timing will not advance or retard properly.

[hans1159]

Thanks for the quick reply.

I am confused by your posting. I can't seem to find a linkage going from the starboard side to the port side of the motor (where the CDI is). Can you elaborate on what I should be looking for (based on my apparent lack of knowledge)?

Thanks,
Craig

[boats.net]

Hard to say but would probably start with carb cleaning to be able to rule out fuel problem.