ls2000 engine not running at full capacity

[4x15mph]

The holes are in part #33 in this pic (inner cover exhaust): Yamaha Boat Parts 2001 OEM Parts Diagram for Exhaust 1 | Boats.net

 

[Juan Mejia]

Thank you

 

[jjtherocketman]

Thanks again for your suggestions. I did swap the CDI from the good engine with the one from the bad engine but it did not make any difference. I have spark to all six spark plugs so I did not think it would be the wires. But if you suggest it, I may go ahead and swap out or buy new ones. Is there another way to test? I can check the carbs again. I am just getting tired of all work and no play with this boat since it has not been working well for the last few month.

This is an old thread, but if you happen to come back here at some point, can you (or anyone else) describe the process of removing and replacing the CDI? I opened that box up today and can't see a thing down there behind the motor. I thought I was going to find the CDI box right there on top, but only found a lotta wiring and connectors laying on top of a rubber "boot" of some sort that I assume is covering the CDI? Any and all info anyone can provide on the process of removing and replacing the CDI would REALLY be appreciated!

 

[4x15mph]

I agree, it is a cob web of wires once you pull the cover off. I never replaced the CDI which is that whole unit based on my understanding. I did want to replace my spark plug wires with new ones but once I opened that up, I decided to leave well enough alone. Seal it up good if you opened it up. There are places that sell new units. Try jetskisolutions.com