Secret Cabin no. 5
Well-Known Member
- Messages
- 7
- Reaction score
- 11
- Points
- 62
- Boat Make
- Yamaha
- Year
- 2013
- Boat Model
- SX
- Boat Length
- 19
I was having issues with first off loss of speed that gradually got worse and sometimes improved a bit. Then the engine was stalling every now and then when starting. Sometimes rpms seemed to not be stable and sometimes they were. Then the idle went up significantly (near 2000rpm). I spent hours and hours looking for problems and doing research and finally found one little post on Greenhulk about a new throttle body mount from Riva/Worx/or whoever for $85. Solved all issues!
So the issue was a bad throttle body mount that delaminates and lets excess air in that the ECU cannot control as well as loss of boost. This explains the bad idle and then the loss of speed/performance.
The Yamaha mount is a poorly designed part but had a good intention to isolate the throttle body from engine vibrations. It consists of a mounting plate with a rubber section bonded to the metal and the bolts that hold the throttle body do not go through the metal plate and the only thing holding this part together is essential some glue. So it slowly develops small holes and as the engine heats and cools the rubber expands and contracts causing different issues at different times that leads the owner to change out other parts looking for a fix for this issue.
Here is the Riva Part link from Greenhulk: https://www.4-tecperformance.com/index.php?main_page=product_info&cPath=16_82_114&products_id=5506&zenid=93s9vpfmjh4qkt19m9ibk7jdv5
So the issue was a bad throttle body mount that delaminates and lets excess air in that the ECU cannot control as well as loss of boost. This explains the bad idle and then the loss of speed/performance.
The Yamaha mount is a poorly designed part but had a good intention to isolate the throttle body from engine vibrations. It consists of a mounting plate with a rubber section bonded to the metal and the bolts that hold the throttle body do not go through the metal plate and the only thing holding this part together is essential some glue. So it slowly develops small holes and as the engine heats and cools the rubber expands and contracts causing different issues at different times that leads the owner to change out other parts looking for a fix for this issue.
Here is the Riva Part link from Greenhulk: https://www.4-tecperformance.com/index.php?main_page=product_info&cPath=16_82_114&products_id=5506&zenid=93s9vpfmjh4qkt19m9ibk7jdv5
