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2003 Seadoo Sportster 4000RPM Rate Topic:

#1 TNSeadoo

Novice

Group: Members
Posts: 4
Joined: 08-September 10
Water:Lake
Year of DOO:2003
Model of DOO:Sportster 4-TEC
Engine in DOO:Rotax 4-TEC

Posted 08 September 2010 - 11:18 AM

I just purchased a 2003 Seadoo Sportster 4-TEC took it to the lake today and it will only turn 4000RPMS. Starts fine no beeps no other known issues. Any advice what to check?
Thanks Chris

#2 Pete Z

Novice

Group: Members
Posts: 133
Joined: 04-August 10
Water:Trent-Severn Waterway
Year of DOO:2009
Model of DOO:Speedster 150
Engine in DOO:Rotax 4-TEC SCIC

Posted 08 September 2010 - 12:27 PM

This may seem overly simple, but when you advance the throttle lever to full is it pulling the throttle body butterfly all the way open?

#3 TNSeadoo

Novice

Group: Members
Posts: 4
Joined: 08-September 10
Water:Lake
Year of DOO:2003
Model of DOO:Sportster 4-TEC
Engine in DOO:Rotax 4-TEC

Posted 08 September 2010 - 12:41 PM

Yes it seems to be. Started it up in the driveway and it revs to 7000rpms with no problem.

#4 Pete Z

Novice

Group: Members
Posts: 133
Joined: 04-August 10
Water:Trent-Severn Waterway
Year of DOO:2009
Model of DOO:Speedster 150
Engine in DOO:Rotax 4-TEC SCIC

Posted 08 September 2010 - 12:56 PM

So is it seemingly running fine otherwise? Does it just pull normally to 4000 rpm and run cleanly at that RPM or is it bogging and just barely pulling 4000?

#5 TNSeadoo

Novice

Group: Members
Posts: 4
Joined: 08-September 10
Water:Lake
Year of DOO:2003
Model of DOO:Sportster 4-TEC
Engine in DOO:Rotax 4-TEC

Posted 08 September 2010 - 02:23 PM

I would have to say barely pulling to 4000rpms. It is not missing or spitting and sputtering the motor sounds fine just will not go over 4000rpms while in the water. Out of the water revs to 7000rpms quickly.

#6 Kevin Leclair

SeaDooSportBoats.com Founder

Group: SDSB Management
Posts: 5,127
Joined: 01-October 03
Water:Allatoona Lake
Year of DOO:2010
Model of DOO:210 Wake
Engine in DOO:Twin Rotax 4-TEC SCIC

Posted 12 September 2010 - 11:18 AM

To me it seems like there is something bogging it down while you are in the water. Is the lake you boat in very weedy?

It also might be helpful to get a shop manual, it might allow you to troubleshoot something that we are possibly missing.

http://seadoosportbo...er-shop-manual/

Need a shop or part manual for your boat or PWC? Join the SDSB Club here, http://seadoosportboats.com/join and download them here, http://seadoosportboats.com/files

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